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 5975-01-472-2194
NSN 6685-01-068-4446
NSN 6620-01-176-3530
NSN 6645-01-273-2462
NSN 5945-00-727-5846
NSN 6320-01-426-8947
NSN 5965-01-189-2421
NSN 6150-01-031-7793
NSN 5920-01-022-8106
NSN 5855-01-433-4393
NSN 5925-00-517-8512
NSN 5895-01-094-6694