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 5965-01-485-3501
NSN 5925-00-539-8372
NSN 5905-01-624-4231
NSN 5975-00-183-7693
NSN 6620-01-339-1238
NSN 6135-01-366-7477
NSN 5935-00-683-3562
NSN 6110-01-076-3585
NSN 5945-00-416-9382
NSN 6685-01-441-4170
NSN 6130-01-587-9138
NSN 6645-01-442-0899