Gaskets, seals and compliant parts

Deformable O-ring

A deformable O-ring in standard AS568 sizes, modeled as a small FEM torus in NBR or silicone for groove insertion and assembly.

Also called o ring, oring, rubber ring or seal ring.

FEM soft body

Delivered as USD for NVIDIA Isaac Sim

O-ring, reference image

How is the deformable O-ring modeled?

An O-ring is a torus of rubber, and the task is usually to stretch it over a shaft or press it into a groove. We model it as a tetrahedral volume with enough elements across the cross section to roll and twist the way a real ring does when it is pushed.

Sizes follow the AS568 standard by dash number, and NBR and silicone have their own stiffness and friction. Matching grooved shafts and bores are available as rigid parts.

Which parts of the deformable O-ring deform?

Ring
Stretches over a shaft, rolls and twists, squeezes into a groove

What ships in the USD?

One USD file per variant, with the render mesh, the simulation geometry and a physics material bound to it. Every value is set and named, so you can open it in NVIDIA Isaac Sim and run your task, or read the numbers into your own solver from the material JSON.

  • FEM soft body. A tetrahedral volume solved with the finite element method, with the visible surface carried by it. Used for foam, rubber and soft food.

Where is it used?

  • Fitting O-rings into grooves
  • Stretching over a shaft
  • Assembly line insertion

Industries: Manufacturing, Automotive

Questions

Can we get our exact O-ring size?

Yes. Give us the AS568 dash number or the inner diameter and cross section, and the compound, and we build that size.

Which simulators does the deformable o-ring open in?

It ships as USD for NVIDIA Isaac Sim and Newton. We also deliver MJCF for MuJoCo and Genesis, a GLB mesh, and a JSON file with every material value.

Can it be matched to our real object?

Yes. Send us a sample, a drawing or a few photos and we set size, stiffness and friction to match your part.

How do we get it?

Choose your simulator, format and variant, then tell us where to send it. We prepare the files and email them to you.

Related assets

Gaskets, seals and compliant parts

Not in the catalog? We build any object to order, with the same physics and delivery.

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