OP-TEK® Flex Family
Advantages of OP-TEK® Flex Comfort - Watch Video

 OP-TEK® Flexible EVA Sheet for O&P is Widely Used For:

  • Soft inner liners for rigid socket frames
  • Inner boots for pediatric AFOs
  • Orthotics for hand and wrist

Performance Characteristics:

  • Excellent moldability
  • Lightweight
  • Maintains consistent walls when formed

Common Brands:

  • OP-TEK® Flex

 OP-TEK® Flex Comfort is Widely Used For:

  • Flexible liners
  • Alternative to LDPE for inner boots

Performance Characteristics:

  • Enhanced surface provides superior comfort
  • Reduces friction
  • Excellent seaming characteristics

 OP-TEK® Flex BiLam is Widely Used For:

  • Flexible inner liners for rigid socket frames
  • Upper and lower extremity prostheses

Performance Characteristics:

  • Excellent formability
  • Decreases friction and hides trim lines
  • Cold flow (creep) resistant

OP-TEK® Flex Family

Flexible EVA sheet for inner liners in rigid socket frames

OP-TEK® Flex materials are soft, flexible EVA copolymers that provide outstanding patient comfort when used as an inner liner for rigid socket frames.

OP-TEK® Flex is specially formulated to maintain more consistent walls during forming compared with many other flexible plastics.

OP-TEK® Flex Comfort exhibits excellent seaming characteristics during drape forming and more consistent walls during blister/bubble forming compared with many other EVA copolymer materials.

OP-TEK® Flex BiLam provides added comfort and improves aesthetics for patients wearing carbon socket frames. The inner layer contains a hypoallergenic, FDA compliant additive that reduces friction, and the outer layer helps hide trim lines and window cut-outs of carbon socket frames.



Typical Properties of EVA Copolymer Sheet
Density g/cm3 D1505 0.952
Tensile strength @ yield psi D638 3580
Elongation @ break % D638 770
Flexural modulus psi D790 2470
Impact brittleness temp °F D746 <-121
DTUL A Scale D648 79A
Vicat softening point °F D1525 111

Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand. 

Need more information about this material? Use our interactive plastic properties table