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 5855-01-098-9038
NSN 4140-00-577-3512
NSN 6240-01-268-2223
NSN 5930-01-396-0196
NSN 6135-01-252-0315
NSN 6105-01-449-6143
NSN 6135-01-586-5018
NSN 5985-01-146-3647
NSN 5910-01-025-2115
NSN 5835-01-624-5666
NSN 5910-00-840-6672
NSN 5905-00-267-9551