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 6645-00-952-4509
NSN 6110-01-551-4551
NSN 2925-00-724-9252
NSN 6610-01-555-8364
NSN 6320-00-306-0124
NSN 5920-01-497-2352
NSN 6130-00-202-4688
NSN 5925-01-009-5626
NSN 5965-01-080-9808
NSN 5930-01-555-4163
NSN 5975-00-740-8367
NSN 5935-01-357-3399