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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.

Highlights

  • 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

Specifications

BrandVIEGA

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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