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 6240-01-368-3280
NSN 6645-01-413-3965
NSN 5905-01-024-3801
NSN 6110-00-153-0936
NSN 5950-01-577-0001
NSN 6620-01-236-0138
NSN 7035-01-232-7263
NSN 6620-01-645-4148
NSN 6150-00-912-9503
NSN 6610-01-381-8898
NSN 5855-00-247-7219
NSN 5998-01-506-0232