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 6240-01-645-4797
NSN 5985-01-600-9876
NSN 5990-01-147-5225
NSN 6685-01-605-8931
NSN 5985-01-126-6474
NSN 5950-01-488-4891
NSN 6220-00-578-6539
NSN 5985-01-642-6891
NSN 6110-00-315-2503
NSN 5930-01-586-6063
NSN 6110-01-155-1626
NSN 5855-01-020-7982