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 5985-00-259-0423
NSN 5905-01-257-5905
NSN 2925-00-524-4688
NSN 6645-01-148-1683
NSN 6145-01-296-4771
NSN 6130-01-095-0295
NSN 5965-00-947-2310
NSN 6685-01-082-6795
NSN 5985-01-632-9551
NSN 6650-01-337-9970
NSN 6150-01-212-8800
NSN 6610-00-710-3236