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Rebuild kits for PAPAILIAS 150# NW-RF [Flanged], NW-BW [Weld Neck] and NW-FT [Threaded Flange] style sight glasses feature a choice of lens and gaskets depending on the particular service. Please contact the factory for seal gasket materials not listed or non-standard lens materials such as Fused Quartz or Polycarbonate [non-glass].All Rebuild kits are supplied with the following:[Qty: 1] Lens, choice of: Tempered Soda Lime Glass Lens [≤300°F] Tempered Borosilicate Glass Lens [≤500°F] Fused Quartz, Cast Acrylic, Polycarbonate (contact factory)[Qty: 1] Seal Gasket, choice of: EPDM Elastomer [≤300°F] Expanded PTFE [≤500°F] Viton/Fluoroelastomer [≤400°F] Other (contact factory)[Qty: 1] Inorganic Fiber Lens Cushions Other (contact factory)All instruction must be read and understood thoroughly before attempting any installation, operation or maintenance. Failure to follow any instruction could possibly result in a malfunction of the sight glass and/or glass breakage with resulting sudden release of pressure causing serious personal injury and/or property damage.ALWAYS WEAR SAFETY GLASSES WHEN INSTALLING OR SERVICING OR OPERATING A SIGHT GLASS.
