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 5910-00-817-5227
NSN 5895-01-283-8901
NSN 6135-00-284-1406
NSN 2925-00-149-0760
NSN 5975-01-412-9421
NSN 5915-00-275-7814
NSN 5855-01-473-4354
NSN 5905-00-056-0531
NSN 6130-00-258-9169
NSN 6650-01-156-8173
NSN 6130-01-025-1540
NSN 6320-01-592-6248