3" Sight Glass Lens

Sight glass lens made of heat resistant borosilicate glass in 3 inch.

This lens is suitable for mounting on a 3 inch tri-clamp ferrule using a 3 inch tri-clamp and silicone o-ring.

Tip: The lens is quite sturdy thanks to a thickness of 4 mm, nevertheless the tri-clamp has to be tightend very carefully, otherwise the lens could be damaged.

Please be aware that although borosilicate glass is very robust, it can have asperities and air entrapment in the glass, as well as asperities by chipping at the edges due to the difficult processing. This is not a product flaw, but a characteristic caused by production. Please handle items made of borosilicate glass with utmost care, do not clamp them too tight, and do not put them down onto hard surfaces! All glasses are carefully inspected by us before delivery and singled out if deviant. We can not accept subsequent complaints.