SCIGRIP / Arjay Technologies

A Viscosity that Works

We provide different viscosities for the different ways you use Arjay Radius Compound.  5121 provides a brush-in solution for larger components and the industry’s go-to solution to prevent air voids

A Brushable Radius Made with
Premium Vinyl Ester Resins

Higher viscosity and physical strength, with the same time-saving blister and impact resistance

Arjay formulates its 5121 Brushable Radius Compound with premium vinyl ester resins, resulting in high physical strength, excellent blister resistance and HDT > 200 °F. It is formulated especially for filling behind the gel coat of tight radii and bonding glass to glass joints. In addition, Arjay’s 5121 Brushable Radius Compound has excellent crack resistance, reduces finish work and helps provide better overall cosmetics.

5121 Premium Performance Benefits

  • Formulated with premium vinyl ester resins
  • Very low volume shrink, reduces air voids
  • Low styrene content
  • Maintains resiliency to resist cracks
  • Excellent durability and impact resistance

What Makes 5121 Premium?

We took our 2121 and added premium resin--and more of it--to create a brushable radius compound that is even stronger and more crack resistant. If your application requires strength, higher flexibility, and class A cosmetics, pick 5121.

Radius Compound in Action

Easy to Apply

Cake bag method being used to fill tight radii

Prevents Air Voids

Application demonstration at client location showing how to apply 2121 to prevent air voides

Availability

Table Header REGULAR
2121 or 5121 Premium Radius Compound
5 Gal Pail | 55 Gal Drum (2121 Only)

TECHNICAL DATA

5121 Premium Radius

VINYL ESTER YBONDING COMPOUND

RECOMMENDED FOR

RECOMMENDED FOR
Filleting Tight Radii Filling Transitioning Style Lines
Bonding FRP Parts Bedding Core
Bonding on Verical Surfaces larger component parts
General Bonding

WORKING TIMES (In Minutes)

GEL TIME Gel Time Interval Total Peak Exotherm
40-60 18-35 58-95 240-320℉

TYPICAL PHYSICAL PROPERTIES

RECOMMENDED FOR
Color Tan
Odor Styrene
Texture Smooth
Weight 10.5-11.5 lbs/gallon
Stability 6 Months

VISCOSITY

GEL TIME RPM µ Min µ Max
2 620,000 960,000
20 60,000 100,000

TYPICAL CURED PROPERTIES

GEL TIME Test Average Values
Tensile Elongation 1.5-2.5%
Tensile Strength 4050-4400 PSI
Flexural Strength 4600-4850 PSI
Compressive Strength 3000-3350 PSI
Lap Shear 2400-2800 PSI
Heat Deflection 205-220℉
Linear Shrinkage < 1%
Shore D Harness 65-85