James Walker Metaflex Spiral-wound Gasket

The Metaflex® spiral-wound gasket consists of a sealing element combining thin metallic wraps pre-formed into a chevron or ‘v’ profile that provides resilience and recovery under high pressure operating conditions. A soft filler material is then introduced between these wraps, which seals the internal pressure across a wide range of media applications.

Available types

• Type C: Suitable for tongue and groove, spigot and recess or flat face to
  recess. Typical applications include pump casings, valve bonnets and OEM.
• Type SG: External ring to locate the gasket within the flanges and act as a compression stop for use on raised-face piping applications.
• Type C/IR: Identical to Type C but with an inner ring compression stop to aid sealing on high pressure applications and improve ease of handling during installation.
• Type SG/IR: External and internal rings locate the gasket centrally on the flange and add stability to the bore to improve recovery, reduce corrosion attack and shield from aggressive media.

Features and benefits

• API 6FB fire certified (Flexible graphite)
• Available in a range of materials capable of withstanding temperatures from cryogenic and below to in excess of 1000°C
• Designed to seal high pressures up to 250 Bar (25 MPa)
• Available with BAM approval for oxygen service
• Maintains high tightness / low leakage under thermal transient conditions
• Resists corrosion in aggressive media environments

Application guidelines

• Piping flange gaskets, heat exchangers,
  boilers, reactors, vessels and OEM equipment
• Compatible with HP steam, hydrocarbons and a wide range of chemicals within
  HPI & CPI industries
• High pressures (up to 250 Bar)
• Suitable for standard ASME, EN, JIS,DIN flanges
• Non-standard dimensions Ø10 mm
  up to Ø3500 mm
• Non-circular manholes, handholes, tube caps
  and plugs for boilers and vessels

Available winding and ring materials

• 304
• 304L
• 316
• 316L
• 310
• 321
• 347
• Inconel®
• Incoloy®
• B2 & C276
• Monel®
• 17-7 PH
• Alloy 20
• Duplex®

Shell TAT approval
Specifically designed from the outset to meet the industry’s most stringent requirements, graphite fill Metaflex is TAT approved to the requirements of both Shell MESC SPE 85/300 3.3.2 Class B (H) for fugitive emissions and Shell MESC SPE 85/300 3.3.5 requirements under the Hot Operational Tightness Test (HOTT).

Note
The operational life span of graphite at high temperatures might be limited due to media or environmental influences, for continuous exposure in oxidising environments above +450°C. Customized solutions are possible, you can contact us by phone: 0031 (0) 88 20 20 200 or email to info@florijnshipspares.com

Volume discount

• At 5 pieces
• At 10 pieces
• At 25 pieces
• At 50 pieces
• At 100 pieces