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 6240-01-142-2963
NSN 5895-01-428-9966
NSN 5910-01-495-3749
NSN 6220-01-214-0270
NSN 5990-00-837-4312
NSN 5998-01-487-4064
NSN 5965-01-250-3214
NSN 6645-00-515-6148
NSN 5998-01-309-0500
NSN 6110-00-350-9571
NSN 2925-00-073-9375
NSN 6320-01-578-6006