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 5895-01-170-5532
NSN 6685-00-389-7935
NSN 6220-01-116-6843
NSN 5975-01-315-5185
NSN 6645-01-284-3598
NSN 6620-01-412-0938
NSN 6135-00-782-6988
NSN 5895-01-052-7332
NSN 6145-01-284-1484
NSN 5975-01-622-6481
NSN 5990-01-434-7913
NSN 6105-01-129-3832