Specifications
Dimensions
- Inside Diameter19.955 in
- Outside Diameter20.375 in
- Overall Weight16.627 g
- Thickness0.1830 in, 4.65 mm
Details
- Accessory TypeBack-Up Ring
- Additional Details8-389 BUNA-N BACKUP RING
- ColorBlack
- Cross Section0.21 in
- Cross Section ShapeRectangular
- Cross Section Tolerance+/-0.005 in
- Durometer90 Durometer
- Inside Diameter Tolerance+/-0.095 in
- Manufacturer Catalog NumberN8-90-389
- 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
75189650 AS568-389 20"ID X20-3/8"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.