• DYMAT® Structural Bearings: Flat Bearings
  • Flat Bearings - Design & Materials

Flat Bearings

DYMAT® Structural Bearings

The 3/16 Inch Problem Solver

Use the DYMAT® flat bearing in any application where a full contact bearing and a low profile is needed. In Europe, flat roof designs have the bearing on all walls at the roof to prevent cracking of roof and walls.

DYMAT® Flat Bearings consist of two layers of a special PTFE compound 1/32 inch thick bonded to 1/16 in Neoprene. The two layers are shipped together as an expansion bearing package with the edges taped together.

Design & Materials


Total thickness 3/16 in
Total dead plus live load maximum of 400 psi
Maximum width 4 ft.
Maximum length 8 ft. without splice
Typical 5 in wide bearing shipped to site in roll, factory spliced to length
Recommended operating temperature -40ºF to 180ºF
Coefficient of friction 0.08 at 400 psi

Steel Components
ASTM A-36 or G.40.21

​Stainless Steel
Sheet shall conform to ASTM A-240 type 304. The face of the stainless steel in contact with the Teflon® shall have a bright annealed finish.

​Polytetrafluoroethylene (PTFE)
100% virgin (unfilled) polymer and etched on bonding side

Specially Compounded

Elastomeric Element
Material specification available upon request.

​Exposed Steel Surfaces
All steel surfaces exposed to environment are zinc metalized 5 Mils thick to CSA G-189 or painted with zinc epoxy paint to design authority specifications.

​Neoprene or Natural Rubber Elements
Material shall conform to AASHTO specifications.


Protect the outside edges of bearings to prevent any material: concrete, plaster, caulking -- from getting between the sliding surfaces

Bond joints with DYMAT® adhesive before concrete pour

Never nail flat bearings

Install flat roof bearings on a true level surface ± 1/32 inch

Top of form work on brick walls must be 5 in above brick level