The image displays a series of gray arrow shapes pointing to the right on a white background.

SIGMA Restraints

Quality - Service - Commitment - Delivered.

SIGMA offers a wide range of both imported and domestic restraint products in ductile iron and PVC. We stock products in 3 to 64 inch size ranges and are a market leader in this sector. Click Here for Price Lists.

A mechanical clamp with black and blue components, labeled with 'SIGMA' and 'SIDE', used to hold pipes or cylindrical objects.

Ductile Iron Restraints

A 3D CAD model of a PVC Restraint, painted in red and blue, labeled with 'SIGMA' and 'SLCE' on the surface.

PVC Restraints

Red restraints for HDPE on a gray background.

Restraints for HDPE

3D rendering of a mechanical assembly, featuring a large circular black ring with multiple blue fasteners and connectors attached around its circumference.

SIGMAFLANGE Adapters

Icon of a calculator and a checklist or plan with check marks.

SIGMA Restraint Calculator

Icon with a gear connected to two decision boxes, one with a check mark and the other with an X, representing a process flow or selection.

SIGMA Restraint Selection Tool

*For additional applications or domestic restraint products, contact your regional office.

Back to Products Page
Back to Products Page