100% Free Tool — Seal Configurator
Custom seal engineering — free, in your browser.
Replace license-locked desktop CAD with a purpose-built engineering workbench: instant 2D previews, live 3D rotations, and immediate downloads of manufacturing blueprints and CAD files — at no cost.
- Instant 2D engineering previews as you dimension the seal.
- Real-time 3D cross-section rotations in the browser.
- Instant .STL and .STEP CAD downloads for CAM and FEA.
- Manufacturing blueprint PDFs — no desktop software required.
No credit card · No paid tiers · Pure utility
Seal Configurator
Free profile library
PS101
Two-piece piston seal (rigid cap + elastomeric energizer).
PS103
Dynamic piston seal — rigid cap + primary O-Ring base + secondary Quad-Ring (X-Ring) energizer.
S101
Symmetrical U-Cup static seal with centred cavity and dual lips.
RS101
Asymmetrical rod U-Cup with offset outer lip and inner sealing lip.
Backup-Ring
Rectangular radial cross-section backup ring defined by seal ID, OD, and axial height.
O-Ring
Toroidal elastomer seal defined by seal ID and cross-section (C/S).
PDF prints, .STL meshes, and .STEP solids — all available without installing legacy industrial desktop software.
Why engineers use Custom Seal Designs
The fastest path from a specification to a finished, manufacturable seal.
Built for teams who need premium sealing solutions without the friction of legacy CAD pipelines — entirely free to use.
Instant 2D engineering previews
Fully dimensioned cross-sections update as you type — no license servers, no desktop installs, no IT tickets.
Real-time 3D cross-section rotation
Spin, zoom, and inspect every revolved cap and energizer in the browser so you can confirm fit before anything is machined.
Instant CAD downloads (.STL / .STEP)
Production-ready solid and mesh files on demand — drop them into CAM, FEA, or your supplier's quoting portal in seconds.
Manufacturing blueprints (.PDF)
Professional engineering prints with tolerance schedules and QC checklists — built to replace outdated industrial desktop software.
Runs in any modern browser
Open the URL and start designing on a laptop, workstation, or tablet on the shop floor.
Engineered tolerances baked in
Every export carries the dimensional tolerances and material specifications your manufacturing partners need.
Free Seal Configurator
Engineer your next custom seal in minutes — no install required.
Open the calculator, dial in your geometry, and walk away with fully-dimensioned prints and production-ready CAD — all from your browser, completely free.
Want to keep track of your designs? Create a free account to save your engineering prints and 3D models with custom project labels for easy searching later.