CHEVRON V-PACKINGS
OVERVIEW
Sigma Seals & Gaskets’ V-packings are light to heavy duty designs that have been in service worldwide for many years in harsh environment applications. The profile of a V-packing provides sealing lips that are suited to applications where heavy side loads and high pressure peaks are encountered. Some typical applications for our V-packings are pistons, hydraulic presses, earth moving equipment, and any other reciprocating and/or rotating heavy duty assembly
Design Considerations
Each V-packing consists of a base ring, two or more intermediate rings, and a non-sealing head ring. The sealing rings have double lips to seal against both the bore and the rod of a system, and the head ring and intermediate rings all have a V-shaped base that enables the V-packing to respond automatically to changes in system pressure.
When under gland compression, the V-shaped base provides a wedging action that enables a system to stay in service even with worn bushes or rams. Furthermore, because the sealing rings have an interference fit at the lips, the seal will perform even at low system pressure. When system pressure increases, the unique V shape takes over and energizes the lips to create a positive seal.
Sigma Seals & Gaskets can manufacture rings from reinforced material to resist extrusion and to avoid distortion while under heavy side loads. We can also create V-packings suitable for high temperatures and pressures. Have a particularly tough case? Let us design the V-packing that will meet your challenge.
• Butyl | • Hydrogenated nitrile (HNBR) | • Glass/moly-filled PTFE | |
• Ethylene-propylene (EPDM) | • PEEK | • Graphite-filled PTFE | |
• FFKM | • Virgin PTFE | • UHMW-PE | |
• Fabric-reinforced FFKM | • Calcium fluoride-filled PTFE | • Viton® | |
• Neoprene | • Carbon/graphite-filled PTFE | • Fabric-reinforced | |
• Nitrile (Buna-N) | • Carbon/graphite/PPS-filled PTFE | • Fabric-reinforced nitrile | |
Standard packing sets are available with temperature ranges between -30° C to +130° C in hydraulic applications. By modifying materials, It is possible to adapt the packing sets to extreme conditions. With pressure ratings of up to 700 bar (10,000 PSI), Sigma Seals & Gaskets can help size the perfect packing set for your application.
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- Pistons
- Hydraulic presses
- Earth-moving equipment
- Other reciprocating or rotating heavy-duty assembly
- High temperatures
- High pressures
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Exhibit a long service life
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For a limited time, can perform even with degraded components
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Insensitive to contamination
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Exceptionally wear-resistant
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Packing components that are easily replaced without dismantling the cylinder
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Readily made in a variety of styles and sizes
FREE QUOTE
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QUALITY GUARANTEE
Sigma Seals & Gaskets specializes in quality elastomeric products. With over 100 years of engineering expertise we are dedicated to offering the highest quality  elastomeric products as well as other products. For your custom quality product design or reverse engineering, our exemplary service and efficient production ensures prompt deliveries coupled with outstanding service.