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 5945-00-357-0239
NSN 2925-00-887-2073
NSN 5960-01-328-8248
NSN 6150-00-403-0498
NSN 5996-01-539-5995
NSN 6620-00-475-3224
NSN 5975-01-472-4976
NSN 6105-01-085-6002
NSN 6645-00-399-1862
NSN 6620-00-635-7347
NSN 5985-01-430-7213
NSN 5910-01-285-8362