Wear Rings

Discover High-Quality Wear Rings for Superior Performance

M Barnwell Services Wear Rings stand out for their impressive durability and longevity. Trusted by renowned OEMs across industries such as food, construction, pharmaceuticals, plants, pneumatic, and hydraulic applications, our wear rings consistently deliver reliable performance.

We provide seals in both Metric and Imperial sizes, offering a diverse range of materials to suit your specific needs. Our options include Rubberised Fabric, PTFE (Virgin, Carbon, Bronze, Glass-filled), Polyurethane (AU), Nitrile (NBR), Hydrogenated Nitrile (HNBR), Viton® (FKM/FPM), Fluorosilicone (FVMQ), Ethylene Propylene (EPDM), Silicone (VMQ), Nylon®, Nylatron®, Acetal, Peek, and Leather.

We supply a range of industries, including Hydraulics. To see the range of Hydraulic and Pneumatic Seals we stock, click here.

What are Wear Rings?

Wear rings, also known as guide rings, play a crucial role in maintaining the centered position of the piston. They ensure uniform wear and even pressure distribution on the seals. These seals find application in both piston and rod scenarios.

For optimal performance, it is recommended to install them on the lubrication (wet) side of the seal. In rod gland setups, position the wear ring on the pressure side of the rod seal.

In piston configurations where only one bearing is used, it is advisable to place it on the side of the piston opposite to the rod. This arrangement keeps the piston wear ring farther away from the rod wear ring.

This configuration becomes particularly crucial during the full extension of the rod. It enhances the leverage between the two bearing surfaces, providing better performance and longevity.

Cuts

They are offered in butt cut, angle cut, and step cut styles.

• Straight Cut, also known as Butt Cut rings, is the easiest to install in many applications and is best suited for rotary movement.
• Angle Cut rings enhance bearing stress at the gap, making them suitable for reciprocating movement.
• Step Cut rings also improve bearing stress and offer better resistance to contaminants and spike loads. This design provides the highest level of performance.

Materials

Wear rings come in both metallic and nonmetallic options, each serving specific purposes. While metal rings find applicability in certain scenarios, nonmetallic rings offer numerous advantages in fluid power applications such as off-highway, material handling, industrial machines, mobile hydraulics, and agricultural equipment.

Wear rings come in various materials, with popular options including glass-filled Nylon, bronze-filled PTFE, and glass-filled PTFE. Nonmetallic rings encompass materials like PTFE-based compounds, thermoset plastics, and thermoplastic options, each possessing unique characteristics.

PTFE-based wear rings excel in providing extremely low friction within hydraulic systems. They are particularly well-suited for dry-running applications when paired with steel, aluminum, or cast iron. The smoothness of PTFE-based wear rings minimises abrasion, allowing for cost-effective hardware use in some cases. The low friction also helps reduce stick-slip during system startups, making them common in equipment operating at high temperatures and pressures.

Thermoset wear rings boast exceptional wear resistance properties, effectively handling heavy loads at low speeds. They meet the demands for strong, light, and durable wear rings. Despite their density, thermoset wear rings exhibit elasticity compared to metal rings.

Thermoplastic wear rings are versatile components in hydraulic systems, often found in internal valves and compressor components. They are temperature-resistant in many systems, offering high performance at a more affordable price compared to PTFE-based or thermoset rings. Most thermoplastic wear rings can seamlessly mate with steel, hard chrome-plated surfaces, and cast iron.

Advantages of Nonmetallic Wear Rings

• Good wiping effect promotes clean and smooth operations.
• Less downtime due to reduced damage to rods or pistons, contributing to extended product life.
• Favorable friction behavior ensures efficient operation.
• High load-bearing capacity for reliable performance under heavy loads.
• Reduced maintenance needs as lubricating grease is no longer necessary.
• Guards against “dieseling,” preventing hydraulic fluid from flowing too rapidly across the cylinder.
• Effective damping of mechanical vibrations enhances system stability.
• Easy installation process streamlines setup.
• Eliminates local stress concentrations for prolonged component life.

Heavy-Duty Wear Rings

Explore the versatility of M Barnwell Services’ wear rings, designed to meet diverse needs ranging from heavy-duty cylinders enduring extreme temperatures and pressures to pneumatic systems seeking attributes like low friction, durability, and self-lubrication. They are available in both metric and imperial sizes.

For heavy-duty applications, we supply wear rings in a split form. The split is oblique for reciprocating/oscillating setups and straight for rotary configurations. Running lengths are readily accessible, with the BA type standing out as the widely preferred general-purpose ring.

Crafted from PTFE with a 40% Bronze content, our standard rings ensure reliable performance. For those aiming for heightened capabilities, a 60% Bronze content option is available upon request. We offer a spectrum of choices, including various widths, cross-sections, profiles, and materials such as PTFE, engineered plastics, and composite materials.

If you require additional information about our range, download our catalogue or contact a member of the team.

E & OE. M Barnwell Services endeavours to make sure that all the content is correct. Information has been gained from manufacturing partners.