VIEGA PROPRESS Crimp Fitting O-Ring: HNBR O-Ring
The VIEGA PROPRESS Crimp Fitting O-Ring (MPN 21038) is an HNBR O-ring replacement gasket for copper and bronze press tube fittings, with a 1.25 in outside diameter. Part of the ProPress CTS series, it is compatible…
SKU 3G-OTH-478076
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Product Description
The VIEGA PROPRESS Crimp Fitting O-Ring (MPN 21038) is an HNBR O-ring replacement gasket for copper and bronze press tube fittings, with a 1.25 in outside diameter. Part of the ProPress CTS series, it is compatible with Viega fittings.
Frequently Asked Questions
What is the VIEGA PROPRESS Crimp Fitting O-Ring 21038 used for?
The VIEGA PROPRESS Crimp Fitting O-Ring 21038 is a replacement HNBR gasket for copper and bronze press tube fittings. It seals connections in ProPress CTS systems, commonly used in commercial plumbing, hydronic heating, and industrial piping applications where reliable, leak-free joints are required.
What are the specifications of the VIEGA PROPRESS O-Ring 21038?
The VIEGA PROPRESS O-Ring 21038 has a 1.25 in outside diameter and is made of HNBR material. It is part of the ProPress CTS series and is compatible with Viega fittings. The manufacturer part number is 21038. HNBR provides excellent resistance to heat, oil, and chemicals.
Where to buy VIEGA PROPRESS O-Ring 21038 worldwide?
3G Electric supplies the VIEGA PROPRESS O-Ring 21038 to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this replacement gasket for ProPress CTS fittings.
How to install the VIEGA PROPRESS O-Ring 21038?
To install the VIEGA PROPRESS O-Ring 21038, first ensure the fitting groove is clean and free of debris. Place the HNBR O-ring into the groove, then press the fitting using a compatible Viega press tool. Follow standard press-fitting best practices: verify proper seating and perform a pressure test after installation.
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3G Electric supplies VIEGA PROPRESS replacement gaskets for copper & bronze press tube fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









