DESCRIPTION

James Walker Metaflex

®

gaskets are

designed to seal flanges where

temperature, pressure, vibration or flow

rates are beyond the capability of

conventional jointing materials.

They are wound in V-section metal

strip and a softer filler material so that

flange surfaces are presented with a

spiral of alternate metal/filler layers.

TYPICALAPPLICATIONS

Pipelines and pressure vessels on

steam, petrochemical, nuclear, marine and hydraulic plant; and heat-

exchangers.

Metaflex Lolode

gaskets are recommended for flange joints

where bolt loading is limited.

PRIME FEATURES

●

Gaskets are made to a wide variety of sizes and shapes.

●

Combinations of metal winding strip and filler are selected to suit the

fluid media and operating conditions.

●

Quick to install and remove.

●

Operating temperatures from cryogenic up to 1000°C.

●

System pressures from high vacuum to over 350bar.

●

Support rings, inside and/or outside of spiral, make gasket suitable for

high line pressure on flat or raised-flange faces.

SPECIFICATIONS

Products are manufactured in accordance with all relevant gasket standards

to suit flange designations: ASME B16.5, BS1560, ASME B16.47 Series A

(MSS-SP44), ASME B16.47 Series B (API605), BSEN 1092 (BS4504);

plus DIN, JIS and NF.

MAXIMUM OPERATING TEMPERATURES OF FILLER

MATERIALS

XA Compressed non-asbestos fibre 500°C

SPG Standard purity graphite (oxidising media) 500°C

SPG Standard purity graphite (inert/reducing media) 600°C

SPG Standard purity graphite (steam) 650°C

HPG High purity graphite (oxidising media) 500°C

HPG High purity graphite (inert/reducing media) 600°C

HPG High purity graphite (steam) 650°C

Fluolion

®

PTFE 260°C

HTF High temperature filler 1000°C

Aluminium and lead also available.

OPERATING PRESSURE

Metaflex gaskets seal up to 350bar, although higher pressures can be considered.

METAL WINDING STRIPS

Standard materials: stainless steels 304L and 316L. Other materials include:

310, 320 and 321; Monel 400 and K500; nickel 200; titanium; Inconel 600,

625 and X750; Incoloy 800 and 825; Hastelloy HB2 and C276.

SUPPORT RINGS

Standard material: carbon steel. Other materials include: stainless steel

304L, 316L, 320 and 321; titanium; Monel 400 and K500; nickel 200;

Fluolion

®

PTFE (inner rings only); Duplex UNS 31803.

STANDARD SIZES (mm)

Nominal Compressed Minimum Maximum

thickness thickness diameter diameter

2.5 1.9/2.1 10 300

3.2 2.4/2.6 10 760

4.5 3.2/3.45 10 1520

7.3 4.7/4.9 60 3550

Largest non-standard gaskets manufactured to date are 5070mm diameter.

HOW SUPPLIED

Almost any combination of component materials is available. Profiles

include circular, obround, square, oval and diamond. Gaskets for non-

standard flanges are made to order.

METAFLEX

® SPIRAL