DIN 3761 Shaft Seals | McMaster-Carr

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Product Family

Shaft Seals

System of Measurement

Seal ID

Seal OD

Seal Width

Shaft Diameter

Bore Diameter

For Use With

Diluted Salt Solutions

Sodium Bicarbonate (Baking Soda)

Color

Material

Maximum Rotation Speed

Loaded Type

Rotation Speed

3,000 rpm to 9,999 rpm

10,000 rpm to 19,999 rpm

Specifications Met

Hardness

Hardness Rating

Spring Material

For Minimum Bore Width

For Sealing

Maximum Temperature

Maximum Pressure

Case Material

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

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

REACH

RoHS

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Spring-Loaded Rotary Shaft Seals with Wiper Lip


Side 1	Side 2	Profile

Used to retain oil on rotating shafts in motors, pumps, bearings, and gearboxes, these seals have a secondary lip that blocks contaminants. Also known as oil seals, a spring secures the lip against the shaft, preventing messy leaks. Press-fit seals into the bore around the shaft. Seals with a maximum pressure of 50 psi should be secured with a retaining ring.

Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.

		Seal, mm			For Bore, mm
	For Shaft Dia., mm	ID	OD	Wd.	Dia.	Min.Wd.	Max. Rotation Speed, rpm	Max. Pressure, psi	Temp. Range, ° F	Hardness	Color	Specs. Met		Each
Buna-N with Steel Case and Steel Spring



		12	12.000	20.000	5.000	20.000	5.300	15,900	7	-20 to 212	Durometer 70A (Hard)	Black	DIN 3761, ISO 6194	5154T111	00000


		20	20.000	30.000	7.000	30.000	7.300	9,500	7	-20 to 212	Durometer 70A (Hard)	Black	DIN 3761, ISO 6194	5154T114	0000
		20	20.000	35.000	7.000	35.000	7.300	9,500	7	-20 to 212	Durometer 70A (Hard)	Black	DIN 3761, ISO 6194	5154T115	0000
		25	25.000	40.000	7.000	40.000	7.300	7,600	7	-20 to 212	Durometer 70A (Hard)	Black	DIN 3761, ISO 6194	5154T116	0000
		25	25.000	47.000	7.000	47.000	7.300	7,600	7	-20 to 212	Durometer 70A (Hard)	Black	DIN 3761, ISO 6194	5154T117	0000
		25	25.000	52.000	7.000	52.000	7.300	7,600	7	-20 to 212	Durometer 70A (Hard)	Black	DIN 3761, ISO 6194	5154T118	0000
		30	30.000	42.000	7.000	42.000	7.300	6,300	7	-20 to 212	Durometer 70A (Hard)	Black	DIN 3761, ISO 6194	5154T119	0000
		35	35.000	47.000	7.000	47.000	7.300	5,400	7	-20 to 212	Durometer 70A (Hard)	Black	DIN 3761, ISO 6194	5154T121	0000
		35	35.000	52.000	7.000	52.000	7.300	5,400	7	-20 to 212	Durometer 70A (Hard)	Black	DIN 3761, ISO 6194	5154T122	0000
		40	40.000	52.000	7.000	52.000	7.300	4,700	7	-20 to 212	Durometer 70A (Hard)	Black	DIN 3761, ISO 6194	5154T123	0000
		50	50.000	65.000	8.000	65.000	8.300	3,800	7	-20 to 212	Durometer 70A (Hard)	Black	DIN 3761, ISO 6194	5154T125	0000