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 6685-01-576-9204
NSN 2925-00-945-0792
NSN 5835-00-787-8122
NSN 6135-01-034-5202
NSN 6220-01-630-0946
NSN 6610-01-441-8364
NSN 6135-01-139-1700
NSN 5920-00-294-0753
NSN 5910-01-030-2943
NSN 5990-01-012-8062
NSN 5905-01-400-4154
NSN 5990-00-167-2692