VK4B KELVAR gold fibre packing is a true multi-service packing that is well suited to the needs of many industries, particularly where physical strength in a packing is required. The strength of KELVAR is ideal for use as anti-extrusion, abrasion resistant, back-up rings, with other packing types, to increase the life of any packing combination.

Applications
For pumps (rotary and reciprocating) and valves, including high pressure or high mechanical loading conditions, against abrasive slurries, sewage, effluents, water, oils, solvents and most chemicals.

The non-staining, superior lubrication of VK4B leads to less wear and a higher shaft speed capability than some other KELVAR packings. Suitable for use in the paper industry.

VK4T, KEVLAR and PTFE fibre packing, is square inter-braided to maximise the benefits of these two remarkable fibres. KEVLAR fibres are specially braided from the core to the corner-posts for dimensional stability and to take maximum advantage, within the packing construction, of the yarns steel-like strength. The TEFLON yarns are braided to the packing surfaces to enhance sealing capability.

Applications
Type VK4T combines low-friction, complete pH range chemical resistance with high mechanical and dimensional strength. A wide ranging packing, for specification especially in high pressure conditions in chemical or abrasive applications, where alternative single fibre packings may extrude or cause significant shaft wear.

The construction and materials of VK4T makes this packing ideal for piston sealing on reciprocating, chemical, slurry and high pressure pumps.

Applications
For rotary and reciprocating pumps, stern glands, hydraulic presses, mixers and valves against abrasive slurries, sewage, effluents, water, oils, solvents and all bar the most aggressive chemicals.

Non-staining lubrication and resilient performance make VK4 ideal for use in the paper industry.