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 5910-01-621-6387
NSN 5975-01-113-7397
NSN 6105-00-879-7157
NSN 6130-01-634-0603
NSN 5920-01-522-9286
NSN 5975-01-269-5607
NSN 5855-01-623-4517
NSN 5990-00-283-1324
NSN 5935-01-583-8035
NSN 6240-01-184-6831
NSN 5985-01-643-7742
NSN 5930-01-111-9592