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 5920-00-871-1045
NSN 6610-01-257-5808
NSN 6240-01-460-2097
NSN 6610-01-512-8154
NSN 6685-00-555-3054
NSN 5935-01-275-2986
NSN 6145-01-408-9608
NSN 6620-01-299-4563
NSN 5855-00-237-4088
NSN 5935-01-113-1741
NSN 6135-01-334-3935
NSN 5910-01-390-3991