Hillman 4338 1 ID x 3 OD Large Neoprene Washer 6-Pack

Description

Product Overview

The Hillman 4338 large neoprene washer is engineered to deliver a dependable seal in demanding environments. Constructed from high‑quality black neoprene, each flat washer measures 1 inch in inner diameter and 3 inch in outer diameter, providing a generous bearing surface that distributes load evenly across fasteners. This design helps prevent nuts, bolts, or screws from pulling through the material, extending the lifespan of both the fastener and the surrounding components. The washers are lightweight, weighing only 0.01 ounces each, and are supplied in a convenient 6‑pack, making them ideal for both bulk projects and on‑hand inventory. Their plain exterior finish ensures a clean, unobtrusive appearance while maintaining excellent resistance to oils, food‑grade acids, greases, and solvents.

Usage

These neoprene washers excel in a variety of industrial and scientific applications where a reliable seal is critical. They are commonly used in plumbing systems, hydraulic assemblies, pneumatic equipment, and machinery that operates with lubricants or corrosive chemicals. The oil‑resistant properties of neoprene make the washers suitable for food‑processing equipment, laboratory apparatus, and automotive components that encounter greases and solvents. Installers appreciate the flat head style, which sits flush against mating surfaces, reducing vibration and noise. Whether you are assembling a pump, maintaining a valve, or reinforcing a bolt connection in a high‑stress environment, the Hillman 4338 washer provides the confidence of a secure, leak‑free joint.

Why Choose Us

Choosing the Hillman 4338 neoprene washer means selecting a product backed by The Hillman Group’s reputation for quality and durability. Each washer undergoes rigorous testing to ensure consistent dimensions, material integrity, and performance under temperature fluctuations. The neoprene formulation is specifically designed to resist degradation from exposure to oils, acids, and solvents, guaranteeing long‑term reliability even in harsh conditions. Our packaging includes six washers per pack, allowing you to replace worn components quickly without excess inventory. Additionally, Hillman offers responsive customer support and a straightforward return policy, ensuring that any concerns are addressed promptly. When you purchase this product, you benefit from a combination of proven engineering, material excellence, and dedicated after‑sales service.

Key Features

• Oil‑ and chemical‑resistant neoprene protects fasteners from corrosion.
• Flat design with 1 inch ID and 3 inch OD provides a wide bearing surface.
• Lightweight yet durable construction reduces vibration and noise.
• Ideal for plumbing, hydraulic, pneumatic, and industrial sealing applications.
• Responsive customer support and easy replacement with a 6‑pack quantity.

FAQ

What size washers do I need for a 1‑inch bolt?

The Hillman 4338 washer has a 1‑inch inner diameter, making it a perfect match for bolts, screws, or studs with a 1‑inch shank. The 3‑inch outer diameter provides additional surface area for load distribution.

Can these washers be used with food‑grade chemicals?

Yes. The neoprene material is formulated to resist food‑grade acids and greases, making the washers suitable for applications in food processing equipment and laboratory environments.

How many washers are included in each package?

Each package contains six individual flat neoprene washers, allowing you to replace multiple fasteners or keep spares on hand for future maintenance.

Are these washers compatible with high‑temperature environments?

Neoprene maintains its sealing properties across a broad temperature range, typically from -40 °C to 120 °C, making the washers suitable for many industrial temperature conditions.

What is the return policy if the washers arrive damaged?

Hillman offers a hassle‑free return policy. If any washers arrive damaged or do not meet specifications, contact our customer service within 30 days for a replacement or refund.