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Stainless steel press-fit cap with EPDM O-ring, 1/2 inch

Viega

Viega 90390 Press-fit Cap 1/2 in Stainless Steel 316

SKU CH-RXEH-7G17N

A press-fit cap for 1/2 in stainless steel piping, rated to 200 psi and 250 °F with EPDM sealing and multiple code approvals

  • Press-fit installation saves time with no soldering required
  • 316 stainless steel resists corrosion in potable water systems
  • EPDM O-ring ensures a leak-free seal at 200 psi
  • Rated for 250 °F continuous operating temperature
  • Meets ASTM A312, ASTM A403, NSF/ANSI 372 and ASME B31 standards

Press-fit Cap for 1/2 in Stainless Steel Piping

The Viega 90390 cap terminates a 1/2 in press-fit line in potable water systems. Its stainless steel 316 body and EPDM O-ring suit residential and commercial plumbing installations. The fitting meets ASTM A312, ASTM A403 and multiple NSF and ASME standards for safe water contact.

Rated 200 psi and 250 Degrees F for Potable Water

The cap handles typical hot and cold distribution pressures with margin for pressure spikes. At sustained temperatures near the 250 Degrees F limit or pressures above 200 psi the fitting reaches its design boundary and should not be used.

316 Stainless Construction with Press-fit Connection

The 316 grade resists corrosion in aggressive water chemistries better than lower alloys. Press-fit installation requires the correct jaw set and eliminates threading or soldering, reducing joint count and potential leak paths on site.

How it compares

Measured against everything we stock in Plumbing Valves & Valve Assemblies, at today’s prices. Recalculated every night.

Price $35.99
Cheaper than about 59% of the 720 comparable items (median $47.49).

Specifications

Product
Brand nameVIEGA

Questions about this item

Will the 1/2 in press-fit cap seal against my existing EPDM O-ring piping?

The cap uses an EPDM O-ring and is rated for 200 psi at 250 Degrees F, matching standard press-fit systems.

How can I verify the 90390 cap is seated correctly after pressing?

A proper press creates a uniform bead around the fitting; the joint should hold 200 psi with no visible gaps.

Does the 90390 cap come with a press tool or must I supply one?

The box contains only the stainless steel 316 cap; a compatible press tool and jaws are sold separately.

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