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 7035-01-248-8596
NSN 6110-01-399-8587
NSN 6220-01-338-9507
NSN 5835-01-657-0245
NSN 5925-00-408-8918
NSN 5990-00-965-0495
NSN 6610-01-497-9302
NSN 4140-01-653-4370
NSN 5985-01-508-8842
NSN 5990-01-414-7618
NSN 6620-01-367-2597
NSN 5999-00-335-8486