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 5895-00-692-2912
NSN 6610-00-522-7670
NSN 5975-00-707-8036
NSN 6645-01-377-7866
NSN 5895-00-820-1997
NSN 5999-01-279-8169
NSN 5996-01-472-2858
NSN 5855-01-133-3587
NSN 6685-01-448-0569
NSN 4140-00-027-5150
NSN 5855-00-337-3679
NSN 6150-01-381-1718