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21023 Viega ProPress sealing element HNBR, 1/2'' (yellow)
Manufacturer Resources
Product Specs
- Connection Type:
- d (Version)
- Country Of Origin:
- Made in China
- Product Dimension:
- 1/2'' (yellow)
- Department:
- Plumbing
- Product Group:
- Plumbing
- Product Subgroup:
- Seals
- Product Type:
- Seal
- Product Length:
- 0.102"
- Product Height:
- 0.835"
- Product Weight:
- 0.002 lbs
- Product Width:
- 0.835"
Viega 21023 – Frequently Asked Questions
1) What size Viega ProPress fitting does the 21023 yellow sealing element fit?
The Viega 21023 sealing element is the 1/2 inch size, color coded yellow. One seal goes in one press fitting socket, so a 1/2 inch coupling that presses on both ends takes two of them. It measures 0.835 inch across with a 0.102 inch cross section.
2) What is the difference between the yellow HNBR seal and the standard black EPDM ProPress seal?
Color is the tell. The 21023 is an HNBR element, and Viega color codes HNBR yellow to separate it from the standard black EPDM used in potable water and hydronic work. If the fitting in front of you came with a black ring and the job calls for HNBR, you have to swap it, not just add it.
3) Can I use the Viega 21023 yellow seal to replace a damaged or missing O-ring in a 1/2 inch press fitting?
That is what it is sold for. Press fittings ship with an element installed, and if one is nicked, twisted, or fell out on the job, the 21023 drops into a 1/2 inch socket as a replacement. Match the material first: this one is HNBR, so it is a like for like swap only if the fitting is meant to run an HNBR element.
4) How do I make sure I order the right Viega press seal size, since they all look similar?
Go by the part number and the color, not by eye. The 21023 is the 1/2 inch yellow HNBR element. Sizes sit close enough in diameter that a visual guess gets fittings wrong, and a seal that is one size off will not hold the press. Keep them bagged and labelled in the van.
5) Do I need a special press jaw or tool when using the Viega 21023 HNBR sealing element?
No. The 21023 is only the elastomer ring inside the fitting socket. The press tool and jaw are selected by fitting size and system, so a 1/2 inch jaw that presses the fitting presses it the same whether the element is HNBR or EPDM.
6) Is the Viega 21023 seal worth stocking in quantity for an MRO or service truck inventory?
It is a consumable that weighs almost nothing, 0.002 lbs each, so a bag of them takes no space on the truck and saves a return trip when a ring gets cut during assembly. For facilities standardizing on 1/2 inch press copper with HNBR elements, keeping spares of the yellow ring is cheap insurance.
How fast can I get the Viega 21023 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Viega 21023 come with a warranty?
Absolutely. The Viega 21023 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Viega 21023?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Viega 21023 from ZenSupply?
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