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 6650-01-004-1372
NSN 5975-00-927-4982
NSN 6620-01-361-8685
NSN 5925-00-085-0701
NSN 5990-00-594-7291
NSN 5920-01-441-9363
NSN 6620-01-643-5531
NSN 5975-01-250-2940
NSN 5855-00-185-1560
NSN 5998-01-132-2998
NSN 5945-00-529-0103
NSN 6135-01-202-8113