sight glass High pressure clean glass. Max work: 10 bar material:304.316/316L stainless steel sight glassBody: SS 304, 316, 316LScrew Bolt: Stainless steelSeal : EPDM, Silicone or Viton availableEnd Connection : 3A, BS, DIN, SMS, RJT, IDF, Weld, Male & Clamp ends.