This is the original old style sight glass for your Kinney KMBD vacuum pump. It is a small but very important part. It lets you see the oil level inside your pump at a simple glance. Checking the oil often is the best way to keep your pump running well. This direct replacement part fits just like the original.
The seal adapter sleeve (Part# 12927) is a key part of the drive shaft seal assembly. It works with the mechanical seal to keep oil inside the pump and prevent leaks. If you are rebuilding your KMBD pump or replacing a worn shaft seal, you may need this sleeve. It fits multiple KMBD models including 540, 720, 850, 1600, 2000, and 2700. A quality replacement part for your Kinney mechanical booster.
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