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 6135-01-477-5259
NSN 5950-01-435-5478
NSN 5990-00-451-7630
NSN 6320-00-681-1324
NSN 5855-01-624-2678
NSN 2925-01-327-3069
NSN 6650-00-361-1808
NSN 5945-01-509-8682
NSN 2925-00-234-7918
NSN 6645-01-050-5221
NSN 5925-01-212-7249
NSN 6105-00-866-0368