J.W. Winco Inc. now offers series GN 743.7 Brass Fluid Level Sight Glasses.
- RoHS-compliant
- Features brass body, natural glass, heat-resistant technopolymer plastic reflector, and seal of NBR rubber (Perbunan)
- Conical thread makes metallic seal possible
- When male thread is tightened, it wedges itself within appropriate female thread
- Temperature resistant to 230 F (110 C)
- Can be fastened in by hand where male thread has same thread diameter as female thread
- Tightening by means of a tool increases length of engagement and seals screw connection
- A sealant (fibrous or teflon band) can also be used
- Thread is "roughened," to prevent sealant from shifting during fastening
- Appropriate for use on pressurized oil tanks
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