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 5925-01-374-5211
NSN 5925-00-246-4645
NSN 5950-01-514-8430
NSN 5910-00-660-9464
NSN 5998-01-222-0641
NSN 5985-00-787-3085
NSN 5975-00-921-4894
NSN 5990-01-517-1909
NSN 5975-01-437-0962
NSN 6610-00-191-5317
NSN 5925-01-192-7713
NSN 7035-00-020-2227