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 5930-01-656-9238
NSN 6320-01-532-7491
NSN 5960-01-527-3525
NSN 5930-01-128-8241
NSN 5915-01-512-1327
NSN 5945-00-307-6378
NSN 5910-01-367-2738
NSN 5905-01-341-8901
NSN 5905-01-391-4983
NSN 5925-01-335-1698
NSN 6150-00-689-4453
NSN 6145-01-195-0332