3/8" Shaft Diameter Shaft Seals

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10 Products

Spring-Loaded Rotary Shaft Seals


Side 1	Side 2	Profile

Also known as oil seals, use these to retain oil on rotating shafts in motors, pumps, bearings, and gearboxes. 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.

Acrylic-Coated Case—Seals with an acrylic-coated case have a coating that compensates for surface imperfections in the housing bore for a tight seal on the OD.

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



		3/8"	0.375"	0.749"	0.250"	0.749"	0.266"	2,200	50	-40 to 210	Durometer 75A (Hard)	Black	—	—	DIN 3760, ISO 6194	0000000	000000


		Buna-N with Steel Case and Steel Spring



				3/8"	0.375"	0.749"	0.250"	0.749"	0.266"	2,200	10	-40 to 210	Durometer 75A (Hard)	Black	—	—	DIN 3760, ISO 6194	00000000	0000


				3/8"	0.375"	0.875"	0.250"	0.875"	0.266"	2,200	10	-40 to 210	Durometer 75A (Hard)	Black	Acrylic Coated	Green	DIN 3760, ISO 6194	00000000	00000

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.

Acrylic-Coated Case—Seals with an acrylic-coated case have a coating that compensates for surface imperfections in the housing bore for a tight seal on the OD.

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



		3/8"	0.375"	0.750"	0.250"	0.750"	0.266"	2,200	10	-40 to 210	Durometer 80A (Hard)	Black	Acrylic Coated	Green	DIN 3760, ISO 6194	0000000	000000

Heavy Duty Shaft-Mounted Rotary Shaft Seals


Side 1	Side 2	Profile

These seals are fluoroelastomer, so they have excellent chemical resistance and withstand temperatures up to 390° F. Also known as V-rings and flingers, they protect shaft bearings by blocking dust and other contaminants while retaining lubricant. To install, stretch the seal over your shaft and press it firmly against the face plate.

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

	For Shaft			Seal
	Dia.	Dia. Range	For Faceplate Dia.	ID	OD	Wd.	Max. Rotation Speed, rpm	Max. Pressure, psi	Temp. Range, ° F	Hardness	Color		Each
Fluoroelastomer



		3/8"	0.374" to 0.453"	0.728" to 0.807"	0.354"	0.591"	0.217"	17,000	5	5 to 390	Durometer 60A (Medium)	Brown	0000000	00000

Shaft-Mounted Rotary Shaft Seals


Side 1	Side 2	Profile

Also known as V-rings and flingers, these seals protect shaft bearings by blocking dust and other contaminants while retaining lubricant. They’re Buna-N for excellent resistance to oil and grease. To install, stretch the seal over your shaft and press it firmly against the faceplate. The Seal OD and Seal Width listed are the dimensions of the seal after it is installed.

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

	For Shaft			Seal
	Dia.	Dia. Range	For Faceplate Dia.	ID	OD	Wd.	Max. Rotation Speed, rpm	Max. Pressure, psi	Temp. Range, ° F	Hardness	Color		Each
Buna-N



		3/8"	0.370" to 0.450"	0.890" to 0.970"	0.340"	0.891"	0.250"	17,400	100	-20 to 225	Durometer 85A (Hard)	Black	0000000	00000

Mechanical Pump Shaft Seals

Commonly used in well, sump, and displacement pumps, these seals have a two-piece spring-loaded design that keeps the sealing surfaces in contact as the material wears. Seals come furnished as two pieces—the seal and the seat. The seal is comprised of the case, spring, diaphragm, and washer, which come locked together as one piece. Seal Width represents the working height, which is the compressed length when installed. The seat is comprised of the seat and the gasket.

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

Buna-N Diaphragm—Buna-N diaphragms resist grease and a wide range of oils.

Buna-N Gasket—Buna-N gaskets resist grease and a wide range of oils.

Cannot Be Sold Outside North America—Products cannot be sold outside North America due to restrictions.

				Seal			Seat			Material
	For Shaft Dia.	Mfr. Equiv. No.	Mfr./Brand Equiv.	ID	OD	Wd.	ID	OD	Wd.	Washer	Seat	Max. Pressure, psi	Cannot Be Sold To		Each
304 Stainless Steel Case and 304 Stainless Steel Spring with Buna-N Diaphragm and Buna-N Gasket



		3/8"	511	John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L	0.375"	0.917"	0.625"	0.421"	0.875"	0.218"	Phenolic	Gray Iron	150	Outside North America	00000000	000000

Rotary Shaft Seals for Grease


Side 1	Side 2	Profile

Also known as grease seals, these are designed to retain thick lubricant at low pressure in motors, pumps, bearings, and gearboxes. They have a light grip on the shaft that creates less friction than spring-loaded seals. Press-fit seals into the bore around the shaft.

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

Acrylic-Coated Case—Seals with an acrylic-coated case have a coating that compensates for surface imperfections in the housing bore for a tight seal on the OD.

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



		3/8"	0.375"	0.688"	0.156"	0.688"	0.172"	2,200	10	-40 to 210	Durometer 75A (Hard)	Black	Acrylic Coated	Green	DIN 3760, ISO 6194	0000000	00000


		3/8"	0.375"	0.749"	0.250"	0.749"	0.250"	2,200	10	-40 to 210	Durometer 75A (Hard)	Black	—	—	DIN 3760, ISO 6194	00000000	0000
		3/8"	0.375"	0.875"	0.250"	0.875"	0.266"	2,200	10	-40 to 210	Durometer 75A (Hard)	Black	—	—	DIN 3760, ISO 6194	0000000	0000