Gauge Glass Washers
Sealpro stocks gauge glass washers in a multitude of sizes for whatever the application requires. Sold singly or in packs of 12. Common washer materials carried (other materials are available on request):
 Molded EPDM (-65° to 350°)
Molded EPDM (-65° to 350°) 
EW-761 – 5/8" x 7/8" x 3/8" 
EW-762 – 3/4" x 15/16" x 5/16"
(Other sizes available)
 Marvel Washers
Marvel Washers
MW-303 – Marvel #3 (5/8" x 7/8") 
MW-707 – Marvel #7 (3/4" x 1-1/4")
(Most Marvel sizes stocked)
 Click to View/Download Size Chart
Click to View/Download Size Chart
 Grafoil Washers (Up to 800°)
Grafoil Washers (Up to 800°)
GW-578 – 5/8" x 7/8" x 3/8" 
GW-763 – 3/4" x 1-1/4"
(Other sizes available)
Observation Sight Glass
OBS-xxx
Round peep sight glass in a variety of widths and thicknesses.  
Clear and tinted glass available.
Brass Friction Rings (Up to 800°)

BR-058 – 5/8" 
BR-075 – 3/4" 
BR-316 – 1-3/16"
Standard sizes are 5/8"x 7/8" and 3/4" x 15/16".  
Other combinations are available.  
Sold singly or in packs of 12.
 Butler Bevel Gauge Glass Seal
Butler Bevel Gauge Glass Seal
Selected sizes available
GB-770 – 3/4" 
GB-780 - 5/8"
Made from TEFLON®. A premium gasket for steam/water service. Prevents cloudiness and erosion of OD gauge glass due to steam leakage bypassing top seal. Four pieces per package.


