PTFE Graphite Packing, Material : PTFE

Vulcan VP1 is 100% GORE® fibre packing. This remarkable yarn is constructed from PTFE and Graphite intimately blended and locked and then treated with a high temperature, break-in lubricant. Vulcan VP1 is an outstanding packing for use in aggressive or arduous duties including the most difficult chemical environments. It is essentially chemically inert over the entire pH range. The unique combination of locked Graphite and PTFE creates a yarn with very high thermal conductivity, that does not harden, shrink, swell nor dry out and that is exceptionally smooth running with negligible shaft wear. User experience with G1 fibre has shown that, in practically all cases, greatly extended service life can be expected.
In order to obtain maximum benefit from this fibre, Vulcan VP1 is square inter-braided via a CROSS-LOCK® process. The construction of VP1 increases the durability of the packing and reduces the gland pressure required to perform a seal. Periods between gland maintenance and packing replacement are thus even further extended and Type VP1‘s CROSS-LOCK® braiding helps overcome extrusion problems, which can be the one negative of this fibre, particularly in lower quality braids.
Type VP1 standard spool length is 8 metres. Custom lengths can be available - please contact us using the form.
Applications : For use wherever the value of the best quality and material packing can be realised. Since the actual purchase cost of a packing is typically only 3% of the true utilisation cost, Vulcan recommend this PTFE GRAPHITE packing for all possible applications. They will increase service life whilst minimising wear and gland adjustments, against nearly all media in static, rotary and reciprocating uses.
Features
Chemically inert over the entire pH range
High thermal conductivity
Increase service life whilst minimising wear and gland adjustments
Operating Limits
Pressure Rating: 120 Bar
Rotary Speed: 25 ms
Temperature: -200˚C to +280˚C
pH Range: 0 - 14
Limits are for guidance only. Product performance is dependent on materials and other operating conditions.