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 5855-00-405-4532
NSN 2925-00-284-1534
NSN 5935-00-284-3984
NSN 5925-00-617-2994
NSN 5965-01-522-0404
NSN 5999-01-391-5416
NSN 6145-01-124-6688
NSN 5835-00-853-7785
NSN 6650-00-418-2129
NSN 6320-01-624-0193
NSN 6145-00-548-7195
NSN 6220-00-448-3522