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 6610-01-431-6867
NSN 6685-01-411-5969
NSN 6320-00-174-1362
NSN 6150-01-208-7917
NSN 5905-00-234-9863
NSN 6685-00-150-2305
NSN 5915-00-005-3311
NSN 6240-01-495-6570
NSN 6320-00-908-6841
NSN 6645-01-442-6476
NSN 2925-01-136-2551
NSN 6150-01-207-1939