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 6110-01-476-4708
NSN 5930-01-175-2863
NSN 5998-00-450-5447
NSN 5990-01-234-8646
NSN 5950-01-573-7961
NSN 5915-00-460-9990
NSN 6685-00-103-2854
NSN 2925-01-509-3783
NSN 5925-01-079-8417
NSN 5998-01-559-5091
NSN 5950-01-360-8728
NSN 5975-01-470-1955