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 6150-01-438-7297
NSN 5990-01-390-2177
NSN 5950-00-194-3048
NSN 6645-01-346-4505
NSN 6110-01-387-1749
NSN 6320-00-894-1644
NSN 6240-01-415-9991
NSN 5999-00-767-1222
NSN 5965-01-053-7168
NSN 6220-00-030-6728
NSN 5925-00-056-8931
NSN 6645-00-155-2398