Polypac Heavy Industrial Seal Solutions
Heavy Industrial Seal Solutions by Polypac
Reliable Sealing for Extreme Environments
Polypac specializes in Heavy Industrial Seal products engineered to perform under high pressure, high temperature, and chemically aggressive conditions. From large bore hydraulic seals to oil seals for rotating equipment, our components are designed to reduce leakage, extend maintenance intervals, and protect critical systems across mining, oil & gas, construction, and power generation.
Advanced Materials and Proven Formulations
Founded on a legacy of filled PTFE technology, Polypac manufactures bronze-filled, carbon-filled, graphite, MoS₂-filled and glass-filled PTFE parts alongside elastomer O-rings in NBR, FKM, EPDM, silicone and high-performance FFKM. These material options give Heavy Industrial Seal solutions the chemical resistance, low friction and wear properties needed for heavy-duty applications.
Custom Manufacturing, Scaled for Industry
Our custom rubber ring and O-ring factory covers more than 10,000 m² with 8,000 m² of production space, outfitted with industry-leading production and testing equipment. We deliver tailored Heavy Industrial Seal designs — from prototype to high-volume runs — optimizing geometry, compound selection and tolerances to meet OEM specifications and special working conditions.
Engineered Performance and Quality Assurance
Polypac’s R&D partnerships with universities and research institutions ensure seals are validated by rigorous testing: pressure cycling, extrusion resistance, thermal aging and chemical compatibility. The result is Heavy Industrial Seal products that provide predictable service life and reduced downtime.
Applications and Industry Use Cases
Our seals are used in hydraulics, pumps, compressors, rotary shafts, valves and actuators where reliability matters most. Typical applications include subsea systems, drilling equipment, heavy machinery and process plants that demand robust sealing under continuous load.
Why Choose Polypac
Choose Polypac for unmatched expertise in Heavy Industrial Seal design and material science. We offer fast customization, strict quality control, international cooperation and responsive technical support to deliver sealing solutions that protect your assets and improve lifecycle costs. Contact Polypac to specify custom seals for your next heavy industrial project.
Heavy Industrial Seal Display
When should I use a spring-energized seal instead of a standard elastomeric seal?
Consider a spring-energized seal (e.g., GSF, SPN types) for demanding applications involving: Extreme Temperatures (below -30°C or above +200°C) Aggressive Chemicals that elastomers can't handle Very Low Leakage or "Zero Leakage" requirements Poor Lubricity or dry running conditions The internal spring maintains constant sealing force, compensating for wear and system variables.
What is the difference between a static seal and a dynamic seal?
A Static Seal is used between two surfaces that do not move relative to each other (e.g., pipe flanges, end caps). O-rings and gaskets are common static seals. A Dynamic Seal is used between surfaces that do move (e.g., piston and cylinder, rotating shaft). Rod seals, piston seals, and rotary shaft seals are designed for this purpose.
Can I reuse a seal?
We strongly recommend never reusing seals. Once compressed and used, a seal takes a "set" and its elastic properties are degraded. Reusing it almost always results in a leak. Always install a new seal during any maintenance or repair.
What is the purpose of the metal spring in a rotary shaft seal?
The garter spring in a shaft seal (e.g., FSKR, SPGO types) provides a constant radial force on the sealing lip. This ensures consistent contact with the rotating shaft, compensating for minor wear, eccentricity, and vibration to prevent lubricant leakage.
How do I choose the right material for my sealing application?
Material selection depends on four key factors: Media: What fluid or gas will the seal contact? (e.g., petroleum oil, water, chemicals, steam) Temperature: What is the minimum and maximum operating temperature? Pressure: What is the system's operating pressure? Are there pressure spikes? Application: Is it a static, dynamic, or rotary seal? Example: NBR (Buna-N) is excellent for standard hydraulic oil, while FKM (Viton®) is needed for high temperatures or aggressive chemicals.
Are PTFE seals a good choice for vacuum and cryogenic uses?
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Mini O-Ring Kits-011 SUMITOM | Compact Assortments for Electronics, RC Models & Small Appliances
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