dbde24e1-4012-47b6-8db4-e89ee4ca5a70 - Polypac

English

Turkish

dbde24e1-4012-47b6-8db4-e89ee4ca5a70

Polypac Construction Machinery Seal Kit — Durable Hydraulic Seal Solutions

Polypac Construction Machinery Seal Kit — Reliable Sealing for Heavy Equipment

Polypac offers a specialized Construction Machinery Seal Kit designed to meet the demanding needs of excavators, loaders, bulldozers and other heavy equipment. Our kits combine industry-proven materials and precision-manufactured components to reduce downtime, minimize leakage and extend service intervals.

Why Choose Polypac Construction Machinery Seal Kits

Choose Polypac for award-winning seal design, fast lead times and tailored solutions. Each Construction Machinery Seal Kit is optimized for hydraulic performance, abrasion resistance and installation ease. We focus on cost-effective longevity—lowering total cost of ownership for fleet operators and maintenance teams.

Comprehensive Material Options

Our seal kits include a wide range of materials: NBR, FKM, EPDM, silicone, FFKM and filled PTFE variants (bronze, carbon, graphite, MoS₂, glass). Material selection is matched to application pressures, temperatures and fluid compatibility to ensure reliable operation in harsh environments.

Custom Sealing Solutions & Advanced Manufacturing

Polypac’s custom rubber ring and O-ring factory spans over 10,000 m² with 8,000 m² of production space and industry-leading equipment. We manufacture bespoke Construction Machinery Seal Kits to OEM specifications or customer drawings, supporting special sizes, tolerances and compound requirements.

Performance in Harsh Working Conditions

Designed for heavy-duty cycles, our kits resist extrusion, compression set and chemical attack. Whether high temperature, abrasive dust, hydraulic oil contamination or shock loads, Polypac seals maintain hydraulic integrity and peak machinery performance.

Quality Assurance & R&D Partnerships

Quality is verified through rigorous testing and long-term collaboration with universities and research institutes. Our production and testing processes meet strict industry standards to guarantee consistent performance across batches and applications.

Applications & Compatibility

Polypac Construction Machinery Seal Kits are compatible with cylinders, pumps and rotating joints across construction fleets. Typical applications include boom cylinders, bucket rams, swing drives and undercarriage hydraulic systems.

Order, Support & Warranty

Contact Polypac to specify a Construction Machinery Seal Kit tailored to your fleet. We provide technical selection support, quick sampling and reliable after-sales service. Trust Polypac for seals that keep your machines moving.

Construction Machinery Seal Kit Display

FAQ:

How can I prevent seal damage during installation?

Use Tools: Always use dedicated installation tools (e.g., picks, cones, guides). Lubricate: Always lubricate the seal and the contact surface. Protect Sharp Edges: Cover sharp threads and edges with tape or use an installation sleeve. Check the Groove: Ensure the installation groove is clean, deburred, and undamaged.

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 difference between NBR and FKM materials?

NBR (Nitrile/Buna-N): A general-purpose, cost-effective material with excellent resistance to petroleum-based oils and fuels. It has a standard temperature range of -30°C to +100°C (-22°F to +212°F). FKM (Fluoroelastomer/Viton®): A premium material with excellent resistance to high temperatures (up to 200°C+), chemicals, and oils. It is used in more severe environments but is more expensive than NBR.

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.

Why did my O-ring fail prematurely?

Common causes of O-ring failure include: Chemical Incompatibility: Swelling, softening, or cracking due to fluid exposure. Improper Sizing: Using an incorrect size leads to over-compression or inadequate sealing force. Abrasion: Wear and tear from rough surface finishes or contaminated fluid. Extrusion: The seal is forced into the gap between metal parts under high pressure. Installation Damage: Nicks, cuts, or twists during assembly.

Table of Contents

≡

Polypac Construction Machinery Seal Kit — Reliable Sealing for Heavy Equipment
Why Choose Polypac Construction Machinery Seal Kits
Comprehensive Material Options
Custom Sealing Solutions & Advanced Manufacturing
Performance in Harsh Working Conditions
Quality Assurance & R&D Partnerships
Applications & Compatibility
Order, Support & Warranty
Construction Machinery Seal Kit Display

Related Blog

What are common inspection and maintenance tips for shaft seals?

This guide provides essential information on rotating shaft seals, including their applications, common failure causes, inspection and maintenance tips, and how to select the right seal material. It also highlights Polypac's advantages in seal manufacturing.

What are common inspection and maintenance tips for shaft seals?

FKM: The Complete Guide to High-Temperature & Chemical-Resistant Sealing | Polypac

Discover Polypac’s comprehensive guide to FKM seals, designed for high temperature and chemical resistant applications. Learn how FKM provides durable, reliable sealing solutions to enhance performance and safety in demanding industrial environments.

FKM: The Complete Guide to High-Temperature & Chemical-Resistant Sealing | Polypac

How to install a rotating shaft seal step-by-step?

This guide provides essential information on rotating shaft seals, including installation steps, maintenance tips, and common troubleshooting techniques, tailored for professionals in the seal manufacturing industry.

How to install a rotating shaft seal step-by-step?

The Ultimate Guide to Rod Seals: Types, Selection, Failures, & Future Trends in 2026

A comprehensive guide for engineers and maintenance professionals on rod seals. Covers types, material selection, failure analysis, installation best practices according to ISO standards, and future industry trends.

The Ultimate Guide to Rod Seals: Types, Selection, Failures, & Future Trends in 2026