How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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High-Temperature Flange-Mount Rope Edge Seals
In addition to high temperatures, these seals have a fiberglass cover and core that resists most refrigerants, salts, and grease. They’re flexible and compressible, and are often used as caulking and for filling expansion joints. The flange on these seals slides into a slot that is commonly found on oven, furnace, and boiler doors; it can be positioned to cover large gaps.
Per Ft. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| O'all Wd. | Wd. | Flange Thick. | Core Material | Temp. Range, °F | For Use Outdoors | Color | Lengths, ft. | 1-99 | 100-Up | |
Fiberglass Fabric—Plain Back | ||||||||||
| 7/8" | 3/8" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 00000 | 00000 | |
| 1 1/8" | 3/8" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 1 1/8" | 5/8" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 1 1/4" | 1/2" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 1 1/4" | 3/4" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 1 3/8" | 1/2" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 1 3/8" | 5/8" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 1 1/2" | 3/8" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 1 1/2" | 1/2" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 1 1/2" | 5/8" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 1 1/2" | 3/4" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 1 5/8" | 5/8" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 1 3/4" | 1/2" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 1 3/4" | 3/4" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 2" | 3/8" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 2" | 1/2" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 2" | 3/4" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 2" | 1" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 2 1/8" | 5/8" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 2 1/4" | 1/2" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 2 1/4" | 3/4" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 2 1/2" | 1" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 2 3/4" | 3/4" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 3" | 1/2" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 3" | 3/4" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
| 3" | 1" | 1/8" | Fiberglass Fabric | -20° to 1000° | No | White | 0000000 | 0000 | 0000 | |
Ultra High-Temperature Flange-Mount Rope Edge Seals
These seals have a strong Inconel core covered with woven silica yarn that’s been treated to withstand extremely high heat. They resist most refrigerants, salts, and grease. The flange on these seals slides into a slot that is commonly found on oven, furnace, and boiler doors; it can be positioned to cover large gaps.
Core | Per Ft. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| O'all Wd. | Wd. | Flange Thick. | Material | Construction | Temp. Range, °F | For Use Outdoors | Color | Lengths, ft. | 1-24 | 25-Up | |
Silica Fabric—Plain Back | |||||||||||
| 1" | 3/8" | 3/32" | Inconel 625 Nickel | Mesh | -40° to 2300° | No | Orange | 0000000 | 00000 | 00000 | |
| 1" | 1/2" | 3/32" | Inconel 625 Nickel | Mesh | -40° to 2300° | No | Orange | 0000000 | 0000 | 0000 | |
| 1 1/4" | 1/2" | 3/32" | Inconel 625 Nickel | Mesh | -40° to 2300° | No | Orange | 0000000 | 0000 | 0000 | |
| 1 1/2" | 3/8" | 3/32" | Inconel 625 Nickel | Mesh | -40° to 2300° | No | Orange | 0000000 | 00000 | 0000 | |
| 1 1/2" | 1/2" | 3/32" | Inconel 625 Nickel | Mesh | -40° to 2300° | No | Orange | 0000000 | 00000 | 0000 | |
| 1 1/2" | 3/4" | 3/32" | Inconel 625 Nickel | Mesh | -40° to 2300° | No | Orange | 0000000 | 00000 | 00000 | |
| 2" | 1/2" | 3/32" | Inconel 625 Nickel | Mesh | -40° to 2300° | No | Orange | 0000000 | 00000 | 00000 | |
| 2" | 3/4" | 3/32" | Inconel 625 Nickel | Mesh | -40° to 2300° | No | Orange | 0000000 | 00000 | 00000 | |
| 2 1/2" | 3/4" | 3/32" | Inconel 625 Nickel | Mesh | -40° to 2300° | No | Orange | 0000000 | 00000 | 00000 | |
| 3" | 3/4" | 3/32" | Inconel 625 Nickel | Mesh | -40° to 2300° | No | Orange | 0000000 | 00000 | 00000 | |
High-Temperature Chemical-Resistant Flange-Mount Rope Edge Seals
The PTFE coating on these fiberglass seals is slippery, so they are easier than the other seals to press fit into oven, furnace, and boiler doors. The PTFE resists most acids, alkalies, refrigerants, salts, and grease. The flange is also handy for positioning over uneven gaps.
Per Ft. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| O'all Wd. | Wd. | Flange Thick. | Core Material | Temp. Range, °F | For Use Outdoors | Color | Lengths, ft. | 1-24 | 25-Up | |
PTFE-Coated Fiberglass Fabric—Plain Backing | ||||||||||
| 1" | 3/8" | 1/8" | Fiberglass Fabric | -40° to 500° | No | White | 00000000 | 00000 | 00000 | |
| 1" | 1/2" | 1/8" | Fiberglass Fabric | -40° to 500° | No | White | 00000000 | 0000 | 0000 | |
| 1" | 3/4" | 1/8" | Fiberglass Fabric | -40° to 500° | No | White | 00000000 | 0000 | 0000 | |
| 1 1/2" | 3/4" | 1/8" | Fiberglass Fabric | -40° to 500° | No | White | 00000000 | 0000 | 0000 | |
Molten Metal Splash-Resistant Flange-Mount Rope Edge Seals
A silicone-coated fiberglass cover sheds sparks and molten metal splash while a stainless steel spring core bounces back when pressure is relieved. These seals resist steam, most refrigerants, salts, and grease. The flange on these seals slides into a slot that is commonly found on oven, furnace, and boiler doors; it can be positioned to cover large gaps.
Core | Per Ft. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| O'all Wd. | Wd. | Flange Thick. | Material | Construction | Temp. Range, °F | For Use Outdoors | Color | Lengths, ft. | 1-99 | 100-Up | |
Silicone-Coated Fiberglass Fabric—Plain Back | |||||||||||
| 7/8" | 3/8" | 1/16" | Stainless Steel | Spring | -80° to 450° | No | Red | 0000000 | 00000 | 00000 | |
| 1" | 1/2" | 1/16" | Stainless Steel | Spring | -80° to 450° | No | Red | 0000000 | 0000 | 0000 | |
| 1 3/8" | 3/8" | 1/16" | Stainless Steel | Spring | -80° to 450° | No | Red | 0000000 | 0000 | 0000 | |
| 1 1/2" | 1/2" | 1/16" | Stainless Steel | Spring | -80° to 450° | No | Red | 0000000 | 0000 | 0000 | |
| 1 3/4" | 3/4" | 1/16" | Stainless Steel | Spring | -80° to 450° | No | Red | 0000000 | 0000 | 0000 | |
| 2 1/4" | 3/4" | 1/16" | Stainless Steel | Spring | -80° to 450° | No | Red | 0000000 | 0000 | 0000 | |
| 2 1/2" | 1" | 1/16" | Stainless Steel | Spring | -80° to 450° | No | Red | 0000000 | 0000 | 0000 | |
| 3" | 1" | 1/16" | Stainless Steel | Spring | -80° to 450° | No | Red | 0000000 | 0000 | 0000 | |
Ultra High-Temperature Chemical-Resistant Flange-Mount Rope Edge Seals
A ceramic cover makes these seals more chemical resistant than the seals with a silica cover. Seals resist acids (except hydrofluoric and phosphoric), diluted alkalies, most refrigerants, salts, and grease. The flange on these seals slides into a slot that is commonly found on oven, furnace, and boiler doors; it can be positioned to cover large gaps.
| O'all Wd. | Wd. | Flange Thick. | Core Material | Max. Temp., °F | For Use Outdoors | Color | 1 ft. | 10 ft. | 25 ft. | |
Ceramic Fabric—Plain Back | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 7/8" | 3/8" | 3/16" | Inconel 625 Nickel | 1700° | No | White | 0000000 | |||
| 1" | 1/2" | 3/16" | Inconel 625 Nickel | 1700° | No | White | 0000000 | |||
| 1 3/4" | 3/4" | 3/16" | Inconel 625 Nickel | 1700° | No | White | 0000000 | |||
| 2" | 1/2" | 3/16" | Inconel 625 Nickel | 1700° | No | White | 0000000 | |||
| 2" | 1" | 3/16" | Inconel 625 Nickel | 1700° | No | White | 0000000 | |||
| 3" | 1" | 3/16" | Inconel 625 Nickel | 1700° | No | White | 0000000 | |||
Nuts for 45° Flared Fittings for Copper and Brass Tubing
- For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Mineral Oil, Refrigerant, Water; except nuts for 1" tube OD are not for use with fuel oil
- Temperature Range: -65° to 250° F
- Tubing: Use with seamless brass and copper that meets ASTM B280
- Specifications Met: SAE J512, SAE J513, UL Listed; except nuts for 1" tube OD meet SAE J512 and SAE J513 only
Use these nuts with 45° flared tube fittings to provide a tight metal-to-metal seal on flared copper and brass tubing. Nuts are brass for good corrosion resistance. They don’t require a sleeve, which makes for a fast, convenient installation.
Long nuts support more of the tube’s surface area than short nuts for a strong grip in high-vibration applications.
For Tube | |||||||
|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Nut Material | Max. Pressure | Lg. | Each | ||
Short Nuts | |||||||
| A | 1/8" | 0.03" | Brass | 2,800 psi @ 72° F | 1/2" | 000000000 | 00000 |
| A | 3/16" | 0.035" | Brass | 1,900 psi @ 72° F | 5/8" | 000000000 | 0000 |
| A | 1/4" | 0.049" | Brass | 1,400 psi @ 72° F | 3/4" | 000000000 | 0000 |
| A | 5/16" | 0.049" | Brass | 1,200 psi @ 72° F | 7/8" | 000000000 | 0000 |
| A | 3/8" | 0.032" | Brass | 1,000 psi @ 72° F | 29/32" | 000000000 | 0000 |
| A | 3/8" | 0.065" | Brass | 1,000 psi @ 72° F | 1" | 000000000 | 0000 |
| A | 1/2" | 0.032" | Brass | 750 psi @ 72° F | 1" | 000000000 | 0000 |
| A | 1/2" | 0.083" | Brass | 750 psi @ 72° F | 1 1/8" | 000000000 | 0000 |
| A | 5/8" | 0.035" | Brass | 650 psi @ 72° F | 1 1/16" | 000000000 | 0000 |
| A | 5/8" | 0.095" | Brass | 650 psi @ 72° F | 1 5/16" | 000000000 | 0000 |
| A | 3/4" | 0.035" | Brass | 550 psi @ 72° F | 1 5/32" | 000000000 | 0000 |
| A | 3/4" | 0.109" | Brass | 550 psi @ 72° F | 1 1/2" | 000000000 | 00000 |
| A | 7/8" | Not Rated | Brass | 450 psi @ 72° F | 1 5/8" | 00000000 | 00000 |
| A | 1" | 0.035" | Brass | 350 psi @ 73° F | 1 13/16" | 000000000 | 00000 |
| B | 1/4" | 0.03" | Brass | 1,400 psi @ 72° F | 5/8" | 00000000 | 0000 |
| B | 1/2" | 0.032" | Brass | 750 psi @ 72° F | 27/32" | 000000000 | 0000 |
| B | 5/8" | 0.035" | Brass | 650 psi @ 72° F | 31/32" | 000000000 | 0000 |
Long Nuts | |||||||
| A | 1/8" | 0.03" | Brass | 2,800 psi @ 72° F | 3/4" | 000000000 | 0000 |
| A | 3/16" | 0.035" | Brass | 1,900 psi @ 72° F | 13/16" | 000000000 | 0000 |
| A | 1/4" | 0.049" | Brass | 1,400 psi @ 72° F | 15/16" | 000000000 | 0000 |
| A | 5/16" | 0.049" | Brass | 1,200 psi @ 72° F | 1 1/8" | 000000000 | 0000 |
| A | 3/8" | 0.065" | Brass | 1,000 psi @ 72° F | 1 5/16" | 000000000 | 0000 |
| A | 1/2" | 0.083" | Brass | 750 psi @ 72° F | 1 5/8" | 000000000 | 0000 |
| A | 5/8" | 0.095" | Brass | 650 psi @ 72° F | 1 7/8" | 000000000 | 00000 |
| A | 3/4" | 0.109" | Brass | 550 psi @ 72° F | 2 3/16" | 000000000 | 00000 |
Nuts for Supported 45° Flared Fittings for Copper and Brass Tubing
- For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Mineral Oil, Refrigerant, Water
- Temperature Range: -65° to 250° F
- Tubing: Use with seamless brass and copper
- Specifications Met: SAE J512, UL Listed
Use these nuts with supported 45° flared fittings to create a tight metal-to-metal seal on flared copper and brass tubing. They are brass for good corrosion resistance.
Non-Hardening Thread Sealants with PTFE
PTFE provides a slippery surface that keeps threads from binding. These sealants never fully harden, remaining pliable enough to self-heal and stop leaks before they start, so they’re often used in high-vibration applications that could cause standard thread sealants to fail. Since they have low locking strength, these sealants can be adjusted without tools.
Sealants that meet NSF/ANSI 61 adhere to safety standards for drinking water systems.
Container | Max. Pressure, psi | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size, fl. oz. | Type | For Fluids | For Gases | Temp. Range, °F | For Max. Thread Dia. | Consistency | Specifications Met | Color | Each | |
Low Locking Strength | ||||||||||
Slic-Tite Sealants | ||||||||||
| 4 | Brush-Top Can | 10,000 | 3,000 | -50° to 500° | 2" | Paste | NSF/ANSI 61, UL Listed | White | 0000000 | 000000 |
| 8 | Brush-Top Can | 10,000 | 3,000 | -50° to 500° | 2" | Paste | NSF/ANSI 61, UL Listed | White | 0000000 | 00000 |
| 16 | Brush-Top Can | 10,000 | 3,000 | -50° to 500° | 2" | Paste | NSF/ANSI 61, UL Listed | White | 0000000 | 00000 |
| 32 | Brush-Top Can | 10,000 | 3,000 | -50° to 500° | 2" | Paste | NSF/ANSI 61, UL Listed | White | 0000000 | 00000 |
Sealants | ||||||||||
| 4 | Brush-Top Can | 5,000 | 1,500 | -50° to 500° | 2" | Paste | NSF/ANSI 61 | Blue | 00000000 | 00000 |
Thread Sealants for Oxygen Systems
Completely free of oil and chemically inert, these sealants are safe to use with wet and dry oxygen systems. They contain PTFE, which provides a slippery surface that keeps threads from binding. These sealants are non-hardening, remaining pliable enough to self-heal and stop leaks before they start, so they’re often used in high-vibration applications that could cause standard thread sealants to fail. Since they have low locking strength, these sealants can be adjusted without tools.
The sealant in a tube is a good alternative to thread sealant tape—like tape, it forms PTFE strings between tightened threads, but excess material liquefies, so it won’t clog system components downstream.
Container | Max. Pressure, psi | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size, fl. oz. | Type | For Fluids | For Gases | Temp. Range, °F | Max. Temp. for Oxygen, °F | For Max. Thread Dia. | Consistency | Color | Each | |
Low Locking Strength | ||||||||||
| 3.5 | Tube | 10,000 | 10,000 | -400° to 500° | 140° | 6" | Paste | White | 000000 | 000000 |
Gauge Guards
Also known as isolators or diaphragm seals, these protect gauges from corrosive process media. Fill guards with hydraulic oil (not included) before use.
316 stainless steel guards provide excellent corrosion and chemical resistance and can handle higher temperatures and pressures than plastic guards.
Guards with drain port allow you to remove process media.
Pipe Connections | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Inlet | Outlet | Gasket Material | For Use With | Min. Pressure, psi | Max. Pressure | Max. Temp., °F | Ht. | Each | |
316 Stainless Steel Body | |||||||||
| 1/4 NPT Female | 1/4 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 1 3/4" | 0000000 | 0000000 |
| 1/2 NPT Female | 1/4 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 1 3/4" | 0000000 | 000000 |
| 1/2 NPT Female | 1/2 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 1 1/2" | 0000000 | 000000 |
316 Stainless Steel Body with 1/4 NPT Female Drain Port | |||||||||
| 1/4 NPT Female | 1/4 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 2" | 0000000 | 000000 |
| 1/2 NPT Female | 1/4 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 2" | 0000000 | 000000 |
| 1/2 NPT Female | 1/2 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 2" | 0000000 | 000000 |