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Boyd 1" NPSM Loose CNC Machined Aluminum Cap

SKU# 81056-NV

Regular price $17.50

Shipping calculated at checkout.

This Small Cap is used on many small tanks, and coolant reservoirs.

Cap:

-Material =  CNC Machined 6061 ALUM

- Threads =1” NPSM  Loose 11.5” TPI

-Vented= Yes/ No  Based on your selection

-Lanyard = No

-Gasket = FKM Viton O-ring

This cap will only fit our 1" NPSM NECK SKU# 81070

 

NOTE:  THE VENTED VERSION OF THIS CAP IS SIMPLY A MACHINED GROOVE THAT BYPASSES THE GASKET IT WILL LEAK WHEN LIQUID SPLASHES AGAINST IT.


What does NPSM Loose Mean?  NPSM stands for National Pipe Straight Mechanical.  Loose means that we machine these on the higher end of the tolerance to account for Weld distortion to the neck and expansion and contraction throughout the seasons.