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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About Sealant Flexibility
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High-Temperature Rope Edge Seals

A tighter braid makes these fiberglass seals more durable than High-Temperature Ultra-Conformable Rope Edge Seals. They’re flexible and will conform to uneven surfaces. Push them into the groove that’s commonly built into oven doors, furnaces, and tanks. They resist bleach, solvents, and most acids (do not use with hydrofluoric acid, hot phosphoric acid, and wet hydrogen chloride).
Per Ft. | |||||||
---|---|---|---|---|---|---|---|
Wd. | Max. Temp., °F | For Use Outdoors | Color | Lengths, ft. | 1-49 | 50-Up | |
Fiberglass Fiber—Plain Back | |||||||
1/16" | 1000° | No | White | 0000000 | 00000 | 00000 | |
1/8" | 1000° | No | White | 0000000 | 000 | 000 | |
3/16" | 1000° | No | White | 0000000 | 000 | 000 | |
1/4" | 1000° | No | White | 0000000 | 000 | 000 | |
5/16" | 1000° | No | White | 0000000 | 000 | 000 | |
3/8" | 1000° | No | White | 0000000 | 0000 | 000 | |
7/16" | 1000° | No | White | 0000000 | 0000 | 0000 | |
1/2" | 1000° | No | White | 0000000 | 0000 | 0000 | |
5/8" | 1000° | No | White | 0000000 | 0000 | 0000 | |
3/4" | 1000° | No | White | 0000000 | 0000 | 0000 | |
1" | 1000° | No | White | 0000000 | 0000 | 0000 | |
1 1/4" | 1000° | No | White | 0000000 | 0000 | 0000 | |
1 1/2" | 1000° | No | White | 0000000 | 00000 | 0000 |
High-Temperature Ultra-Conformable Rope Edge Seals

These loosely knitted fiberglass seals are more flexible, compressible, and conformable than High-Temperature Rope Edge Seals. The looser construction also makes them more likely to absorb liquids. Push them into the groove that’s commonly built into oven doors, furnaces, and tanks. They resist bleach, solvents, and most acids (do not use with hydrofluoric acid, hot phosphoric acid, and wet hydrogen chloride).
Per Ft. | |||||||
---|---|---|---|---|---|---|---|
Wd. | Max. Temp., °F | For Use Outdoors | Color | Lengths, ft. | 1-49 | 50-Up | |
Fiberglass Fiber—Plain Back | |||||||
3/16" | 1000° | No | White | 00000000 | 00000 | 00000 | |
1/4" | 1000° | No | White | 0000000 | 000 | 000 | |
3/8" | 1000° | No | White | 00000000 | 0000 | 0000 | |
1/2" | 1000° | No | White | 0000000 | 0000 | 000 | |
3/4" | 1000° | No | White | 0000000 | 0000 | 0000 | |
7/8" | 1000° | No | White | 00000000 | 0000 | 0000 | |
1" | 1000° | No | White | 0000000 | 0000 | 0000 | |
1 1/4" | 1000° | No | White | 0000000 | 0000 | 0000 |
Ultra High- and Low-Temperature Ultra-Conformable Rope Edge Seals

Alumina silicate is loosely woven to create these ceramic seals that are stronger, more flexible, and able to resist higher temperatures than Ultra High- and Low-Temperature Rope Edge Seals. They are commonly used as to tie products together during high-temperature processing, but they can handle cryogenic applications just as well. They won’t burn and they resist molten metal splash. These seals also resist steam, salts, grease, detergents, bleach, and hydraulic fluid; however, they will absorb these substances. Push them into the groove that’s commonly built into oven doors, furnaces, and tanks.
Wd. | Temp. Range, °F | For Use Outdoors | Specifications Met | Color | 5 ft. | 10 ft. | 25 ft. | |
Ceramic Fiber—Plain Back | ||||||||
---|---|---|---|---|---|---|---|---|
1/4" | -300° to 2300° | No | MIL-I-24244 | White | 0000000 | |||
3/8" | -300° to 2300° | No | MIL-I-24244 | White | 0000000 | |||
1/2" | -300° to 2300° | No | MIL-I-24244 | White | 0000000 | |||
3/4" | -300° to 2300° | No | MIL-I-24244 | White | 0000000 | |||
1" | -300° to 2300° | No | MIL-I-24244 | White | 0000000 |
Ultra High- and Low-Temperature Rope Edge Seals

A wide temperature range makes these ceramic seals equally suitable for use in cryogenic applications as they are for extreme-heat applications. They’re made from tightly woven calcium alumina silicate, so they won’t burn and they resist molten metal splash. They also resist steam, salts, grease, detergents, bleach, and hydraulic fluid; however, they will absorb these substances. Push them into the groove that’s commonly built into oven doors, furnaces, and tanks.
Wd. | Temp. Range, °F | For Use Outdoors | Specifications Met | Color | 5 ft. | 10 ft. | 25 ft. | |
Ceramic Fiber—Plain Back | ||||||||
---|---|---|---|---|---|---|---|---|
1/8" | -300° to 1100° | No | MIL-I-24244 | White | 0000000 | |||
1/4" | -300° to 1100° | No | MIL-I-24244 | White | 0000000 | |||
3/8" | -300° to 1100° | No | MIL-I-24244 | White | 0000000 | |||
1/2" | -300° to 1100° | No | MIL-I-24244 | White | 0000000 | |||
3/4" | -300° to 1100° | No | MIL-I-24244 | White | 0000000 | |||
1" | -300° to 1100° | No | MIL-I-24244 | White | 0000000 |
Nuts for Ultra-Corrosion-Resistant Yor-Lok Fittings for Nickel Alloy Tubing

- For Use With: Acetic Acid, Air, Bleach, Cutting Oil, Diesel Fuel, Formic Acid, Fuel Oil, Gasoline, Hydraulic Fluid, Iron Chlorides, Mineral Oil, Salt Water, Steam, Water
- Temperature Range: 0° to 1,000° F
- Tubing: Use with seamless soft C276 nickel
- Specifications Met: ASME B31.3
- Compatible With: Let-Lok, Parker A-Lok, Swagelok®
Use these C276 nickel Hastelloy nuts with Yor-Lok sleeves and fittings to create a strong, leak-resistant seal. With the best corrosion resistance of any metal tube fitting nuts we offer, they stand up to aggressive chemicals and resist pitting and cracking from stress.
For technical drawings and 3-D models, click on a part number.
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.
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.
Polypropylene and PVDF guards are more chemical resistant than PVC and CPVC guards.
Guards with drain port allow you to remove process media.
For technical drawings and 3-D models, click on a part number.
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 |
PVC Plastic Body | |||||||||
1/4 NPT Female | 1/4 NPT Female | Fluoroelastomer Rubber | Bleach, Boric Acid, Hydraulic Fluid, Salt Water, Water | __ | 150 psi @ 72° F | 140° | 2 3/4" | 0000000 | 000000 |
1/2 NPT Female | 1/4 NPT Female | Fluoroelastomer Rubber | Bleach, Boric Acid, Hydraulic Fluid, Salt Water, Water | __ | 150 psi @ 72° F | 140° | 2 3/4" | 0000000 | 000000 |
CPVC Plastic Body | |||||||||
1/4 NPT Female | 1/4 NPT Female | Fluoroelastomer Rubber | Bleach, Boric Acid, Hydraulic Fluid, Salt Water, Water | __ | 150 psi @ 72° F | 190° | 2 3/4" | 0000000 | 000000 |
1/2 NPT Female | 1/4 NPT Female | Fluoroelastomer Rubber | Bleach, Boric Acid, Hydraulic Fluid, Salt Water, Water | __ | 150 psi @ 72° F | 190° | 2 3/4" | 0000000 | 000000 |
Polypropylene Plastic Body | |||||||||
1/4 NPT Female | 1/4 NPT Female | Fluoroelastomer Rubber | Bleach, Boric Acid, Carbon Dioxide, Hydraulic Fluid, Salt Water, Water | __ | 150 psi @ 72° F | 240° | 2 3/4" | 0000000 | 000000 |
PVDF Plastic Body | |||||||||
1/2 NPT Female | 1/4 NPT Female | Fluoroelastomer Rubber | Bleach, Boric Acid, Carbon Dioxide, Hydraulic Fluid, Salt Water, Water | __ | 150 psi @ 72° F | 300° | 2 3/4" | 0000000 | 000000 |