Custom Rubber Gasket Manufacturer | Knife Cut, Die Cut & Waterjet Gaskets | SantopSeal

Looking for a custom rubber gasket manufacturer? Learn how SantopSeal manufactures precision knife cut, CNC cut, die cut and waterjet cut gaskets from EPDM, Silicone, Santoprene®, Viton®, Nitrile and more for OEMs across North America.

Custom Rubber Gaskets Built for Performance, Precision & Production

Every industrial machine, enclosure, pump, valve, HVAC unit, food processing system, medical device, or transportation component depends on one often-overlooked part-the gasket.

A properly designed gasket prevents leaks, keeps contaminants out, absorbs vibration, and protects expensive equipment. When the gasket fails, downtime, product loss, and costly repairs often follow.

That’s why engineers, OEMs, maintenance teams, and purchasing professionals are increasingly turning to custom rubber gasket manufacturers instead of trying to adapt off-the-shelf products.

At SantopSeal Corporation, we manufacture precision custom rubber gaskets, knife cut gaskets, CNC cut gaskets, waterjet cut gaskets, and die cut gaskets from virtually every commercial elastomer available. Whether you need a single prototype or thousands of production parts, we manufacture sealing solutions that match your exact drawing, CAD file, or sample.

Why Custom Rubber Gaskets Are Better Than Standard Gaskets

Standard gaskets are designed to fit common applications. Unfortunately, many industrial systems aren’t standard.

OEM equipment often requires:

• Non-standard dimensions
• Custom bolt hole patterns
• Special thicknesses
• Tight tolerances
• Specific durometers
• Chemical-resistant materials
• FDA or NSF-compliant compounds
• High-temperature elastomers

Instead of modifying your equipment to fit a stock gasket, SantopSeal manufactures the gasket to fit your application.

This results in better sealing performance, longer service life, reduced maintenance, and fewer equipment failures.

Manufacturing Methods for Precision Rubber Gaskets

Every project is different. Material type, production quantity, tolerances, and part geometry determine the most efficient manufacturing process.

Digital CNC Knife Cutting

Digital oscillating knife cutting has become one of the most popular manufacturing methods for custom rubber gaskets.

Unlike traditional die cutting, digital knife cutting requires no expensive tooling, making it ideal for prototypes, engineering changes, replacement parts, and short-to-medium production runs.

Benefits include:

• No tooling investment
• Fast prototype production
• Excellent dimensional accuracy
• Complex shapes without additional cost
• Reduced lead times
• Lower costs for low-volume production

Digital knife cutting is ideal for EPDM, silicone, Santoprene®, sponge rubber, neoprene, nitrile, cork rubber, fiber gasket materials, and many other elastomers.

Precision Waterjet Cutting

When thicker materials or intricate geometries are required, waterjet cutting offers outstanding accuracy.

Because waterjet cutting uses a high-pressure stream of water rather than heat, it produces clean edges without burning, melting, or distorting the material.

Waterjet cutting is commonly used for:

• Thick EPDM sheet
• Silicone sheet
• Sponge rubber
• Heavy-duty industrial gaskets
• Large custom gaskets
• Complex sealing profiles

Die Cut Rubber Gaskets

For medium and high-volume production, die cutting remains one of the most economical manufacturing methods.

After tooling is produced, die cutting offers:

• Fast production speeds
• Excellent repeatability
• Low cost per piece
• High-volume manufacturing
• Consistent quality

Our engineering team helps customers determine whether digital knife cutting, die cutting, or waterjet cutting provides the best value based on annual usage and project requirements.

Rubber Materials Available

Choosing the right material is just as important as selecting the manufacturing process.

SantopSeal manufactures custom gaskets from an extensive range of elastomers and engineered gasket materials.

EPDM Rubber

EPDM is one of the most widely specified gasket materials because it offers exceptional resistance to weather, UV rays, ozone, water, steam, and outdoor environments. It is widely used in HVAC systems, electrical enclosures, transportation, water treatment, and general industrial equipment.

Silicone Rubber

Silicone remains the preferred choice for high-temperature, food-grade, and medical applications. It maintains flexibility across a broad temperature range and is available in FDA-compliant and medical-grade formulations.

Santoprene® (TPV)

Santoprene combines the flexibility of rubber with the durability and weather resistance required for demanding outdoor applications. It is commonly used for automotive seals, appliance gaskets, window seals, industrial enclosures, and transportation equipment.

Nitrile (Buna-N / NBR)

Nitrile provides outstanding resistance to petroleum oils, hydraulic fluids, greases, and fuels, making it a popular material for automotive, agricultural, and industrial sealing applications.

Viton® (FKM)

For chemical processing, aerospace, oil and gas, and high-temperature environments, Viton delivers excellent chemical and heat resistance where standard elastomers may fail.

Additional Materials

SantopSeal also manufactures components from:

• Neoprene
• Natural Rubber
• Closed-cell sponge
• Open-cell sponge
• PTFE
• Fluorosilicone
• Polyurethane
• SBR
• Cork rubber
• Fiber gasket materials
• FDA-compliant materials
• NSF-certified materials
• Medical-grade elastomers
• Garlock® replacement materials
• Klingersil® replacement materials

More Than Just Custom Gaskets

While custom gaskets are our specialty, many customers also rely on SantopSeal for precision-fabricated rubber components.

We manufacture:

• Rubber strips
• Precision shims
• Rubber washers
• Pads
• Spacer components
• Custom seals
• Die-cut parts
• Sponge components
• Custom rubber blanks
• Large-format cut parts

Need custom strips? We cut virtually any width, thickness, and length from rubber sheet.

Need oversized parts? Our digital cutting systems handle complex large-format components for industrial equipment, transportation, and infrastructure projects.

Rubber Sheet Supply

Many manufacturers fabricate their own parts but need a dependable source for premium rubber sheet.

SantopSeal supplies raw sheet material in a wide range of grades, thicknesses, and durometers, including:

• EPDM sheet
• Silicone sheet
• Santoprene sheet
• Nitrile sheet
• Neoprene sheet
• Sponge rubber sheet
• Closed-cell foam
• FDA rubber sheet
• NSF-approved materials
• High-temperature elastomers

Materials are available as full sheets, custom blanks, precision-cut strips, and production-ready pieces to reduce waste and improve manufacturing efficiency.

Industries We Serve

Our custom rubber gaskets and fabricated rubber components are trusted by customers across North America in industries including automotive, HVAC, food processing, beverage, pharmaceutical, medical devices, marine, water treatment, agriculture, heavy equipment, electrical enclosures, renewable energy, industrial automation, pumps and valves, and OEM manufacturing.

Whether you need one prototype or ongoing production, our team works directly with engineers and purchasing professionals to deliver reliable sealing solutions that meet performance requirements and production schedules.

Why Work with SantopSeal?

Choosing the right gasket manufacturer is about more than cutting material. It’s about selecting a partner that understands sealing applications, material performance, manufacturability, and production efficiency.

When you work with SantopSeal, you benefit from:

• Custom manufacturing to your specifications
• CNC digital knife cutting
• Precision waterjet cutting
• High-volume die cutting
• Extensive material inventory
• Fast prototype development
• Production scalability
• Engineering support
• Material selection guidance
• Flexible order quantities
• Competitive lead times
• Service across North America

Whether your project involves a simple gasket, a complex sealing system, custom rubber strips, precision-cut sheet material, or large production runs, SantopSeal has the expertise and manufacturing capabilities to deliver high-quality results.

Request a Quote

If you’re looking for a reliable custom rubber gasket manufacturer that can produce knife cut gaskets, CNC cut gaskets, waterjet cut gaskets, die-cut gaskets, custom rubber strips, and precision-fabricated rubber components, SantopSeal is ready to help.

Simply send us your drawing, CAD file, dimensions, or sample. Our engineering team will recommend the best material, manufacturing process, and production method for your application-helping you reduce lead times, improve sealing performance, and keep your projects moving.

Certifications & Compliance:

ISO 9001 | NSF 51 & NSF 61 | USP Class VI | RoHS Compliant | UL 94 V-0

Contact SantopSeal Corporation:

• Phone: +1 (412) 444-1888
• Fax: +1 (412) 444-1882
• Email: info@santopseal.com
• Website: https://www.santopseal.com/