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 6240-01-360-0225
NSN 5935-00-528-9103
NSN 5905-00-537-4070
NSN 6320-01-086-2602
NSN 5996-00-931-9368
NSN 5895-01-061-5064
NSN 5985-00-816-8486
NSN 7035-01-042-5308
NSN 6150-00-151-6771
NSN 5835-00-804-0569
NSN 5975-00-234-0852
NSN 5910-01-485-5051