Norland Optical Adhesive 81 (NOA 81)
Low-viscosity UV optical adhesive — 320-380 nm, ~2 J/cm², Shore D 90
Key capabilities
- UV-curing adhesive
About this product
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Compare with similar items
Comparable materials — cure window, chemistry and approvals side by side.
| Spec | This item  Norland Optical Adhesive 81 (NOA 81) Norland Products $38 30% specced You are here | Norland NOA 88 Norland Products Price on request 26% specced View → | EPO-TEK OG198-54 Epoxy Technology (EPO-TEK) Price on request 15% specced View → | Polytec PT UV 2108 Polytec PT Price on request 15% specced View → |
|---|---|---|---|---|
| Type | adhesive | adhesive | adhesive | adhesive |
| Cure wavelength | 320–380 nm | 320–380 nm | 315–395 nm | 320–390 nm |
| Required cure dose | 2,000 mJ/cm² | 5,000 mJ/cm² | 5,000 mJ/cm² | 800 mJ/cm² |
| Base chemistry | free-radical UV photopolymer (single-part) | — | — | — |
| Hardness | 90 Shore D | 90 Shore D | — | — |
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