Two-Piece Fittings, Standard Inserts, International End Configurations - Metric O-Ring Female Swivel 24º Seat - DIN 3865 Heavy - A Series On Kuriyama of America, Inc.
4. Size List - O-Rings-Stock O-Ring Webshop
SCUBA Standard 11/16inch Tank DIN Valve DuPont Viton 112 O-Ring 10 pcs [Bonus O-Ring Pick] - Walmart.com