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 6610-00-285-5366
NSN 5990-01-066-1526
NSN 6220-01-201-8216
NSN 6240-00-583-9863
NSN 6110-01-423-2960
NSN 5910-01-293-5326
NSN 5855-01-558-9357
NSN 5996-00-272-2560
NSN 6685-00-948-6737
NSN 5960-00-553-7338
NSN 6620-00-134-1593
NSN 5910-01-466-3047