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 7035-00-500-7839
NSN 6645-00-963-6354
NSN 6220-01-068-1360
NSN 6220-01-420-6512
NSN 2925-00-511-0325
NSN 5905-01-026-6306
NSN 5905-00-296-8763
NSN 2925-01-355-3866
NSN 6130-01-274-8491
NSN 6105-01-094-5268
NSN 4140-01-412-1566
NSN 5920-01-365-3360