![304 Stainless Steel and Borosilicate Glass tri-clamp compatible Sight Glass. Angled view to show the tri-clamp connections. Photo Credit: TCfittings.com](http://tcfittings.com/cdn/shop/products/4Tri-ClampIn-LineSightGlassSideView1_{width}x.jpg?v=1644253117)
![304 Stainless Steel and Borosilicate Glass tri-clamp compatible Sight Glass. Top down view to show product profile. Photo Credit: TCfittings.com](http://tcfittings.com/cdn/shop/products/4Tri-ClampIn-LineSightGlassTopView_{width}x.jpg?v=1644253117)
4" Tri-Clamp In-Line Sight Glass
Sale price$130.00
![Borosilicate Sight Glass Replacement Glass. Top angled view to show the thickness of the glass. Photo Credit: TCfittings.com](http://tcfittings.com/cdn/shop/products/4SightGlassReplacementGlass-TopView_{width}x.jpg?v=1649957003)
![Borosilicate Sight Glass Replacement Glass. Angled view. Photo Credit: TCfittings.com](http://tcfittings.com/cdn/shop/products/4SightGlassReplacementGlass-SideView_{width}x.jpg?v=1649957003)
Sight Glass Replacement Glass - 4"
Sale price$30.00
![Silicone Sight Glass Replacement Seals. Set of two. Photo Credit: TCfittings.com](http://tcfittings.com/cdn/shop/products/4SightGlassReplacementSeals-TopViewTwo_{width}x.jpg?v=1650050518)
![Silicone Sight Glass Replacement Seals. Top angled view to show the thickness of the silicone. Photo Credit: TCfittings.com](http://tcfittings.com/cdn/shop/products/4SightGlassReplacementSeals-TopView_{width}x.jpg?v=1650050518)
Sight Glass Replacement Seals - 4"
Sale price$7.00
Our entire selection of 4" Tri-Clamp Compatible Sight Glasses and replacement parts.