Crimp Caps | McMaster-Carr

	For Wire Type For Wire Type

	Stranded
	Solid

	For Wire Gauge For Wire Gauge

22
21
20
19
18
17
16
15
14
13
12
11
10
9
8

	Type Type

Splice

Cap

	Insulation Insulation


Fully Insulated	Noninsulated

	For Common Wire Combinations For Common Wire Combinations

One 16-ga. Wire with One 18-
ga. Wire

Three 20-ga. Wires with One
22-ga. Wire

One 12-ga. Wire with One 16-
ga. Wire

One 14-ga. Wire with One 16-
ga. Wire

Four 16-ga. Wires with One
18-ga. Wire

One 8-ga. Wire

	Maximum Voltage Maximum Voltage

	Specifications Met Specifications Met

CSA

ANSI

ASME

International Fuel Gas Code

NSF/ANSI

	Maximum Temperature Maximum Temperature

220° F

Not Rated

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Material Material

Steel

Stainless Steel

	Pipe Size Pipe Size

	For Pipe Schedule For Pipe Schedule


10	40

	For Pipe Material For Pipe Material

Steel

Stainless Steel

	For Use With For Use With

	O-Ring Material O-Ring Material

EPDM Rubber

Buna-N Rubber

Fluoroelastomer Rubber

	Socket Depth Socket Depth

	Length Length

	Maximum Pressure Maximum Pressure

32 Products

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.

A plastic cover fully insulates these splices and is clear so you can visually confirm the connection. Twist stripped wires together, insert them into the connector, and then crimp for a dependable connection.

For technical drawings and 3-D models, click on a part number.

For Wire Gauge	For Common Wire Combinations	For Wire Type	Color	Insulation Material	Terminal Material	Max. Voltage	Max. Temperature, °F	Specifications Met	Pkg. Qty.		Pkg.
22-14	Three 20-ga. Wires with One 22-ga. Wire, One 16-ga. Wire with One 18-ga. Wire	Solid, Stranded	Clear	Nylon Plastic	Copper	300V DC 300V AC	220°	UL Listed, CSA Certified	50	00000000	00000
22-12	Three 20-ga. Wires with One 22-ga. Wire, One 14-ga. Wire with One 16-ga. Wire	Solid, Stranded	Clear	Nylon Plastic	Copper	600V AC 600V DC	220°	UL Listed, CSA Certified	50	0000000	0000
18-8	Four 16-ga. Wires with One 18-ga. Wire, One 8-ga. Wire	Stranded	Clear	Nylon Plastic	Copper	600V AC 600V DC	220°	UL Listed, CSA Certified	50	0000000	00000
16-10	One 16-ga. Wire with One 18-ga. Wire, One 12-ga. Wire with One 16-ga. Wire	Solid, Stranded	Clear	Nylon Plastic	Copper	600V AC 600V DC	220°	UL Listed, CSA Certified	50	0000000	0000

Noninsulated Crimp-On Wire Splicing Connectors

Twist stripped wires together, insert them into the connector, and then crimp for a dependable connection.

For technical drawings and 3-D models, click on a part number.

For Wire Gauge	For Common Wire Combinations	For Wire Type	Terminal Material	Pkg. Qty.		Pkg.
22-14	Three 20-ga. Wires with One 22-ga. Wire, One 16-ga. Wire with One 18-ga. Wire	Solid, Stranded	Tin-Plated Copper	50	0000000	00000
22-12	Three 20-ga. Wires with One 22-ga. Wire, One 14-ga. Wire with One 16-ga. Wire	Solid, Stranded	Tin-Plated Copper	50	0000000	0000
18-8	Four 16-ga. Wires with One 18-ga. Wire, One 8-ga. Wire	Stranded	Tin-Plated Copper	50	0000000	00000
16-10	One 16-ga. Wire with One 18-ga. Wire, One 12-ga. Wire with One 16-ga. Wire	Solid, Stranded	Tin-Plated Copper	50	0000000	0000

Low-Pressure Press-Connect Steel Unthreaded Pipe Fittings

For Use On:
EPDM Rubber O-Ring: Ethylene Glycol, Propylene Glycol, Water
Buna-N Rubber O-Ring: Air, Lubricants, Propane, Fuel Oil, Natural Gas, Diesel Fuel
Specifications Met:
EPDM Rubber O-Ring: ASME B31,1, ASME B31.3, ASME B31.9, FM 1920, UL 213
Buna-N Rubber O-Ring: ASME B31.1, ASME B31.3, ASME B31.9, ANSI LC4/CSA 6.32, International Fuel Gas Code
Maximum Pressure:
EPDM Rubber O-Ring: 200 psi @ 72° F
Buna-N Rubber O-Ring: 125 psi @ 72° F
Pipe Nipples and Pipe: Use Schedule 40 Steel
Flanges: Use Class 150 Steel

Crimp these fittings onto steel pipe to form a tightly sealed connection that’s faster than threading or welding and doesn’t require heat. An internal gripping ring and rubber O-ring create a secure seal when crimped. They are designed to leak if fittings have not been crimped; a colored dot marks the leak path so it's easy to spot unsealed connections. These steel fittings are coated in zinc-nickel to resist corrosion, but will rust if frequently exposed to saltwater or harsh chemicals. They are comparable to Viega MegaPress steel fittings.

Fittings meet ANSI/ASME B31 code requirements for use in pressure piping systems.

Fittings with an EPDM rubber O-ring are often used for water processing lines, fire sprinklers, and heating and cooling systems. EPDM rubber won’t degrade when exposed to water, ethylene glycol, and propylene glycol. These fittings meet UL 213 and FM 1920 standards for use in fire protection systems.

Buna-N rubber O-rings hold up to natural gas, propane, diesel fuel, lubricants, and other oils. Fittings with these O-rings are often used in fuel gas systems and air lines. They meet the ANSI LC4/CSA 6.32 standard for fuel gas systems and comply with the International Fuel Gas Code.

For technical drawings and 3-D models, click on a part number.

Caps

Cap

		Buna-N Rubber O-Ring		EPDM Rubber O-Ring
Pipe Size	Socket Dp.		Each		Each
1/2	0.188"	000000	000000	00000000	000000
3/4	0.188"	00000000	00000	00000000	00000
1	0.188"	00000000	00000	00000000	00000
1 1/4	0.375"	00000000	00000	00000000	00000
1 1/2	0.375"	00000000	00000	00000000	00000
2	0.375"	00000000	00000	00000000	00000

Crimping Tools

Crimping Tool

Crimping tools seal fittings in less than five seconds. These tools are cordless, so you can take them to any job. Connect the jaw or ring that matches your pipe size to these tools, then pull the trigger to crimp the fitting. The pivoting head lets you access connections from any angle.

	Battery
Voltage	No. Included	Cap., amp-hrs.	Battery Charger Included	Battery Charging Time, min.	Compatible With		Each
18V DC	2	3	Yes	39	Viega MegaPress Viega ProPress Viega ProPress XL-C	00000000	000000000

Jaw and Ring Sets

Jaw and Ring Set

Jaw and ring sets include three jaws, three rings, and one ring actuator jaw. Jaws are for pipe sizes 1/2 to 1; they fit directly into the crimping tool. Rings are for pipe sizes 1 1/4 to 2; clip the ring around the fitting and use the ring actuator jaw and crimping tool to press the open ends together.

For Pipe
Size	Material	For Manufacturer	For Manufacturer Model No.	Compatible With	Includes	Container Type		Each
1/2, 3/4, 1, 1 1/4, 1 1/2, 2	Stainless Steel, Steel	Ridgid	RP 340	Viega MegaPress	One Ring Actuator Jaw Three Jaws (1/2-1 Pipe Size) Three Rings (1 1/4-2 Pipe Size)	Carrying Case	00000000	000000000

Low-Pressure Press-Connect Stainless Steel Unthreaded Pipe Fittings

For Use With:
304 Stainless Steel: Air, Ethylene Glycol, Propylene Glycol, Water, Diesel Fuel, Fuel Oil
316 Stainless Steel: Drinking Water, Isopropyl Alcohol, Nitric Acid (10%), Phosphoric Acid (25%), Deionized Water, Anhydrous Ammonia
Maximum Pressure:
304 Stainless Steel: 125 psi @ 72° F
316 Stainless Steel: 200 psi @ 72° F
Specifications Met:
304 Stainless Steel: ASME B31.1, ASME B31.3, ASME B31.9
316 Stainless Steel: ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, NSF/ANSI 372
O-Ring Material:
304 Stainless Steel: Fluoroelastomer Rubber
316 Stainless Steel: EPDM Rubber
Pipe Nipples and Pipe: Use Schedule 10, 40 Stainless Steel
Flanges: Use Class 150 Stainless Steel

Press these fittings onto stainless steel pipe using a crimping tool for a permanent, leak-tight connection that's faster than threading or welding and doesn't require heat. Fittings have an internal stainless steel gripping ring and rubber O-ring that create a seal when crimped. They are designed to leak if fittings have not been crimped; a colored dot marks the leak path so it's easy to spot unsealed connections. These fittings are comparable to Viega MegaPress fittings.

Fittings meet ANSI/ASME B31 code requirements for use in pressure piping systems.

304 stainless steel fittings resist corrosion from frequent exposure to water and fuels. They are often used for water processing lines, heating and cooling systems, and fuel lines.

316 stainless steel fittings stand up to harsh environments with constant exposure to chemical solutions. They meet NSF/ANSI Standard 61 for use with drinking water, and are often found on water and chemical processing lines in corrosive environments.

For technical drawings and 3-D models, click on a part number.

Caps

Cap

			304 Stainless Steel		316 Stainless Steel
Pipe Size	Socket Dp.	Lg.		Each		Each
1/2	1 1/16"	2 9/64"	00000000	000000	00000000	000000
3/4	1 3/16"	2 17/64"	00000000	00000	00000000	00000
1	1 3/8"	2 7/16"	00000000	00000	00000000	00000
1 1/2	1 7/8"	3 1/64"	00000000	00000	00000000	00000
2	2"	3 3/32"	00000000	00000	00000000	000000

Crimping Tools

Crimping Tool

	Battery
Voltage	No. Included	Cap., amp-hrs.	Battery Charger Included	Battery Charging Time, min.	Compatible With		Each
18V DC	2	3	Yes	39	Viega MegaPress Viega ProPress Viega ProPress XL-C	00000000	000000000

Jaw and Ring Sets

Jaw and Ring Set

For Pipe
Size	Material	For Manufacturer	For Manufacturer Model No.	Compatible With	Includes	Container Type		Each
1/2, 3/4, 1, 1 1/4, 1 1/2, 2	Stainless Steel, Steel	Ridgid	RP 340	Viega MegaPress	One Ring Actuator Jaw Three Jaws (1/2-1 Pipe Size) Three Rings (1 1/4-2 Pipe Size)	Carrying Case	00000000	000000000