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 6110-00-088-8269
NSN 6135-00-866-2311
NSN 6240-00-832-3909
NSN 2925-01-238-8679
NSN 6130-01-421-8304
NSN 5910-01-473-1458
NSN 5996-01-207-7122
NSN 5990-00-922-6133
NSN 6645-00-183-8812
NSN 5935-01-217-9012
NSN 6650-00-338-7350
NSN 2925-00-640-8611