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 6135-00-161-0746
NSN 6240-01-236-0781
NSN 5920-00-038-6892
NSN 6150-01-438-7819
NSN 6320-00-382-7825
NSN 5960-01-589-6846
NSN 6645-01-114-8044
NSN 2925-01-468-7073
NSN 5998-00-409-9406
NSN 6610-01-550-2368
NSN 5930-00-600-1675
NSN 6685-00-905-5601