• Custom Molded Rubber Diaphragms
  • Custom Molded Rubber Diaphragms
  • Custom Molded Rubber Diaphragms
  • Custom Molded Rubber Diaphragms
  • Custom Molded Rubber Part with Embossed Logo

At Exactseal, our commitment to precision engineering is exemplified in our comprehensive diaphragm portfolio, offering versatile solutions tailored to diverse industry needs. Our fabric-reinforced diaphragms seamlessly combine the flexibility of rubber with reinforced strength, providing enhanced durability for applications demanding increased tensile strength and resistance to wear and tear.

Leveraging the unique properties of Polytetrafluoroethylene (PTFE), our PTFE diaphragms stand out for their exceptional chemical resistance and temperature stability, making them well-suited for environments with aggressive chemicals and extreme temperatures. This ensures reliable performance in demanding applications.

The versatility of our diaphragm solutions extends to rolling diaphragms, designed for optimal flexibility and longevity. With applications spanning industries such as automotive, aerospace, and medical, rolling diaphragms showcase efficient and reliable movement, making them suitable for dynamic systems.

Specifically engineered for precise control of fluid flow in pumps and valves, our pump and valve diaphragms are crafted with materials ensuring resilience, chemical resistance, and longevity. These diaphragms play a crucial role in fluid-handling systems, contributing to their efficiency and reliability.

Exactseal serves a diverse range of industries with our comprehensive diaphragm solutions, providing reliable components that meet or exceed industry standards. In addition to our diaphragm offerings, we provide a broad spectrum of rubber solutions, including custom rubber extrusion, molded parts, tubing, hose, O-rings, gaskets, seals, and inflatable seals. Our commitment to quality, versatility, and customization positions us as a trusted partner for manufacturing excellence in the realm of rubber products.

Product Range

  • teflot o rings

    PTFE (Teflon) O Rings

  • Rubber Washers

  • Extruded Rubber Strip for Weather Stripping

    Weatherstrip Profiles

  • Custom EPDM Diaphragms

  • Diaphragm Material Selection Guide

  • Die-Cut Diaphragm Gaskets

Custom Rubber Diaphragms We Manufacture

Exactseal engineers and molds custom diaphragms to your performance requirements — the dynamic sealing element that flexes under pressure or vacuum. Common constructions:

Flat Diaphragms
Simple, cost-effective sealing for short-stroke applications.
Rolling Diaphragms
Long linear stroke with low, consistent friction (top-hat / drop-center).
Convoluted Diaphragms
Deep-draw designs for greater stroke and pressure capacity.
Homogeneous Diaphragms
All-elastomer construction for low-pressure service.
Fabric-Reinforced Diaphragms
Fabric-backed for higher pressure, longer cycle life & dimensional stability.

Homogeneous vs. Fabric-Reinforced — How to Choose

The right construction depends on your working pressure and cycle life:

  • Under ~5 psi: homogeneous (all-rubber) is usually sufficient.
  • 5–10 psi: application-dependent — we’ll advise.
  • Over ~10 psi or high cycle life: fabric-reinforced for strength and stability.

Reinforcement fabrics include nylon, polyester (Dacron), aramid (Nomex®/Kevlar®), fiberglass and cotton — ply selected to match your pressure and cycle requirements.

Diaphragm Applications We Serve

Pumps
AODD, metering, fuel and chemical transfer diaphragm pumps.
Valves & Regulators
Pressure & gas regulators, control and diaphragm valves.
Actuators
Pneumatic actuators, wastegates, EGR and vacuum actuators.
Switches & Accumulators
Pressure switches, sensors and accumulator diaphragms.

Diaphragm Materials by Media

We match the elastomer to your media, temperature and pressure. To quote, send us: media, temperature, pressure/vacuum differential, stroke, cycle life and flange geometry.

Material Best For (Media)
Nitrile (NBR) Oils, fuels & hydraulic media.
EPDM Water, steam, brake fluid & weathering.
Viton® / FKM Aggressive chemicals & high temperatures.
Silicone (VMQ) Wide temperature range, food & medical.
Neoprene (CR) Balanced oil & weather resistance.
FFKM Extreme chemical & thermal service.

Certified Quality & Fast Diaphragm Quotes

ISO 9001:2015 · IATF 16949 · NSF — with RMA tolerances, ASTM/Mil-Spec compliance and FDA/REACH material options. We support prototypes through production for OEMs (custom production, not single one-off pieces).

Have a failing or obsolete diaphragm? Send us the part, drawing or spec — we reverse-engineer and improve.

Request a Quote →