Specifications
Dimensions
- Inside Diameter5.859 in
- Outside Diameter6.137 in
- Overall Weight2.178 g
- Thickness0.0480 in, 1.22 mm
Details
- Accessory TypeBack-Up Ring
- Additional Details8-257 BUNA-N BACKUP RING
- Cross Section0.139 in
- Cross Section Tolerance+/-0.004 in
- Dash Number-257
- Durometer90 Durometer
- Hardness90 Shore D
- Inside Diameter Tolerance+/-0.035 in
- Manufacturer Catalog NumberSTU -257
- MaterialNitrile (Buna) Rubber
- Method SoldPriced Per Each
- Product TypeO-Rings
- SeriesSTU
- Temperature Range-22 to 212F
- Trade / Brand NameDichtomatik
- Typical ApplicationHydraulics & Pneumatics, Industrial Machinery, Oil & Gas, belting
Overview
Mfr description
75172076 AS568-257 5-7/8" ID X6-1/8" OD
- very good resistance to oil and gasoline; superior resistance to petroleum-based hydraulic fluids; wide range of service temperatures; good resistance to hydrocarbon solvents; very good resistance to alkalis and acids.