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 5998-01-351-7052
NSN 5895-01-282-8749
NSN 6645-01-541-5696
NSN 4140-01-435-7166
NSN 6685-01-030-8307
NSN 6645-00-936-2505
NSN 5975-01-230-1496
NSN 7035-01-243-5951
NSN 5920-01-383-0300
NSN 5960-01-287-4187
NSN 5925-01-399-3551
NSN 5965-01-213-7256