Rockwell R120 O-Rings | McMaster-Carr

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Methyl Ethyl Ketone (MEK)

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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Maximum Speed

Less than 10 ft/sec

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

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25 Products

Wear Rings


	Profile


Rod Installation	Piston Installation

Made from glass-filled nylon for excellent wear resistance and strength.

Gap Size—Gap size is the maximum distance between the split ends of the ring while it is in use. Rings are closed when not in use.

	For Rod Sealing		For Piston Sealing
	For Rod Dia.	For Groove Dia.	For Bore Dia.	For Groove Dia.	Gap Size	Max. Speed, ft/sec	Temp. Range, ° F	Hardness	Color		Each
Glass-Filled Nylon







				For 0.260" Wide Grooves

				1/2"	0.750"	3/4"	0.500"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N11	000000


				3/4"	1.000"	1"	0.750"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N13	00000
				1"	1.250"	1 1/4"	1.000"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N17	00000
				1 1/4"	1.500"	1 1/2"	1.250"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N19	00000
				1 3/8"	1.625"	1 5/8"	1.375"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N22	00000
				1 1/2"	1.750"	1 3/4"	1.500"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N24	00000
				1 5/8"	1.875"	1 7/8"	1.625"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N26	00000
				1 3/4"	2.000"	2"	1.750"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N28	00000
				1 7/8"	2.125"	2 1/8"	1.875"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N31	00000
				2"	2.250"	2 1/4"	2.000"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N33	00000
				2 1/4"	2.500"	2 1/2"	2.250"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N37	00000


				2 1/2"	2.750"	2 3/4"	2.500"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N39	00000
				2 3/4"	3.000"	3"	2.750"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N42	00000
				3"	3.250"	3 1/4"	3.000"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N44	00000
				3 1/4"	3.500"	3 1/2"	3.250"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N46	00000
				3 3/4"	4.000"	4"	3.750"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N48	00000




						For 0.385" Wide Grooves

						1"	1.250"	1 1/4"	1.000"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N18	00000


						1 1/4"	1.500"	1 1/2"	1.250"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N21	00000
						1 1/2"	1.750"	1 3/4"	1.500"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N25	00000
						1 3/4"	2.000"	2"	1.750"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N29	00000
						2"	2.250"	2 1/4"	2.000"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N34	00000
						2 1/4"	2.500"	2 1/2"	2.250"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N38	00000
						2 3/4"	3.000"	3"	2.750"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N43	00000
						3 1/4"	3.500"	3 1/2"	3.250"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N47	00000
						3 3/4"	4.000"	4"	3.750"	0.093"	3	-40 to 275	Rockwell R120 (Extra Hard)	Gray	1453N49	00000