A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6320-01-262-8642
NSN 5835-01-397-2865
NSN 2925-01-281-6403
NSN 6135-01-585-8174
NSN 6650-00-710-0076
NSN 5855-01-536-9647
NSN 6130-01-450-2776
NSN 5895-01-433-7869
NSN 5985-00-679-5718
NSN 6135-00-575-8942
NSN 5975-00-992-5333
NSN 6220-00-419-0635