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 5930-00-433-6689
NSN 6220-00-215-0170
NSN 5835-01-163-4215
NSN 6620-01-025-1443
NSN 6150-00-409-0541
NSN 5910-00-168-1026
NSN 5985-00-111-3503
NSN 6110-00-525-3418
NSN 6130-00-904-6975
NSN 5930-01-510-9236
NSN 4140-01-214-8577
NSN 6645-01-547-0300