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 5920-01-643-3997
NSN 5996-00-237-8748
NSN 5855-01-408-1786
NSN 2925-01-026-1000
NSN 5835-00-227-7909
NSN 6110-00-177-8755
NSN 5905-00-194-6640
NSN 5905-00-455-8498
NSN 5945-01-359-6337
NSN 5835-01-110-0697
NSN 6685-00-629-5244
NSN 5835-00-707-6266