Measuring Guide

How to measure and order a custom gasket. Instant pricing, no minimum order, ships in one business day.

Not sure how to measure your gasket or how our instant quoting works? Follow this simple guide and you’ll have your custom gasket priced in seconds.

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Step 1: Identify Your Gasket Type

We make it easy with pre-made designs or fully custom uploads:

  • Disc / Round Gaskets → Just need the diameter
  • Exhaust or Flange Gaskets → OD, ID, bolt circle, bolt hole size
  • Rectangular / Square Gaskets → Length, width, radius corners if needed (rectangular and square gasket quoter)
  • Capsule / Slot Gaskets → Length and diameter
  • Fully Custom Shape → Upload your DXF file

Step 2: How to Measure Your Gasket (Simple & Accurate)

For Round / Disc Gaskets Measure the outside diameter (OD) across the widest point.

For Exhaust / Flange / Full-Face Gaskets (most common) You need 4 measurements:

  1. Outer Diameter (OD) – edge to edge
  2. Inner Diameter (ID) – hole in the center
  3. Bolt Circle Diameter (BCD or PCD) – center of one bolt hole to center of the opposite bolt hole
  4. Bolt Hole Diameter – size of each bolt hole

Tip: Use calipers for best accuracy. If you don’t have one, a tape measure works fine for most jobs.

New to calipers? Watch this short video.

For Any Irregular Shape The easiest way: Create or trace your part and upload a DXF file. Our system instantly shows pricing in every material.

Step 3: Choose Your Material

Not sure which material? Visit our Materials Guide for a full comparison (Viton for high heat/oil, EPDM for outdoor/water, Silicone for extreme temperatures, Buna-N for fuel/oil, etc.).

Step 4: Get Your Instant Price

  1. Go to the product page that matches your shape (Exhaust Gasket, Disc Gasket, etc.)
  2. Enter your dimensions
  3. Or upload your DXF for any custom shape
  4. Select material and thickness
  5. See your price instantly

No waiting days for a quote. No minimum order. CNC cut (laser, waterjet, and more) to ±0.015″.

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Measuring a bolted flange? Use the flange gasket quoter (OD, ID, bolt circle, hole count). For general-purpose rubber, start with neoprene gaskets cut to size.

Related: Material Guide · FAQ · Custom gaskets cut to your print · Silicone gaskets