Heavy Duty Step Seal — Robust Sealing Solutions by Polypac

Heavy Duty Step Seal

Product Overview

Polypac's Heavy Duty Step Seal is engineered for demanding hydraulic and rotary systems that require superior wear resistance, extrusion control, and stable sealing under high pressure. Built from advanced filled PTFE variants and High Quality elastomers (NBR, FKM, EPDM, silicone, FFKM), these step seals combine the low friction of PTFE with tailored backup materials to minimize leakage and extend service life.

Key Benefits

Heavy Duty Step Seal offers exceptional benefits for industrial applications: enhanced pressure capacity, improved extrusion resistance, reduced friction torque, and predictable performance across wide temperature ranges. Polypac’s R&D-backed formulations reduce maintenance intervals and increase equipment uptime — critical for heavy machinery, construction equipment, and fluid power systems.

Materials & Customization

Our step seals leverage Polypac’s expertise in filled PTFE (bronze, carbon, graphite, MoS₂, glass) and a broad range of elastomers. Custom sealing profiles, material blends, and dimensional tolerances are available to meet specific working conditions like abrasive media, chemical exposure, or extreme temperatures. Long-term partnerships with universities and research institutes ensure continuous material innovation.

Applications

Designed for harsh environments, the Heavy Duty Step Seal is ideal for high-load hydraulic cylinders, heavy-duty rotary equipment, piston and rod seals, and specialty oil seal applications. It excels where high pressure, frequent cycling, or contamination risk would compromise standard seals.

Why Choose Polypac

Founded in 2008, Polypac combines scientific rigor and advanced manufacturing across a 10,000+ m² facility to deliver reliable sealing solutions. As one of China’s largest seal manufacturers, we provide precise engineering, strict quality control, and scalable production — from prototype to large-volume custom O-rings and rubber components.

Ordering & Support

Polypac offers technical consultation, rapid prototyping, and testing services to ensure the Heavy Duty Step Seal meets your system requirements. Contact our specialists for material selection, performance validation, and custom design options tailored to your operating environment.