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 6220-01-534-3965
NSN 2925-01-312-9502
NSN 5935-01-599-0927
NSN 5935-00-611-0891
NSN 5915-01-548-3017
NSN 6320-00-025-9910
NSN 5950-01-029-2133
NSN 6320-01-102-0799
NSN 5835-00-785-7921
NSN 6135-00-228-8140
NSN 5905-01-496-0209
NSN 7035-00-455-7666