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 7035-01-467-4539
NSN 6220-01-465-8314
NSN 7035-00-981-7216
NSN 5996-01-364-1074
NSN 5925-01-644-2208
NSN 5975-01-371-2875
NSN 5930-00-201-5857
NSN 6150-01-163-6602
NSN 5895-01-245-7388
NSN 5935-00-581-3892
NSN 5965-00-936-4428
NSN 6135-00-816-9052