Viton A-700 - Technical Information - Polymer Comparison and Safety Handling

Nov 2, 2026

Uploaded by acoobca

Viton™ A-700 is a fluoropolymer “A-family” gum used for applications requiring reliable elastomer performance and easy processing. The document lists key processing benefits—good flow for compression molding, strong mold release, reduced mold fouling, improved compression set resistance, and better tear properties. It specifies chemical composition, physical form, color/odor, specific gravity, solubility, storage stability, and Mooney viscosity, plus safety handling guidance. It also provides polymer comparison tables with compounding and cure characteristics, stress/strain, and aging results versus related grades.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages10

Reading Time25 min

AccessFree to download

Introduction

Applications

Product Description

Chemical Composition and Physical Properties

Storage Stability and Mooney Viscosity

Safety and Handling

Polymer Comparison for Viton A-700

Cure and Rheology Parameters

Stress/Strain and Aging Results

A-700 Fluoroelastomers Technical Information Introduction Viton™ A-700* is an“A-family” gum polymer that has demonstrated easy processing. This gum provides: • Good flow for compression molding • Good mold release • Less mold fouling • Improved compression set resistance • Improved tear properties Applications • Preferred material for fuel systems, such as fuel injector O-rings • Compression molding of O-rings, gaskets, and other sealing devices • Extruded cords, profiles, and tubing or calendered sheets, when a blend of gum polymers are used • Solution coatings of fabrics and other substrates • Blending with other polymers for viscosity modifications Product Description | Chemical Composition | Copolymer of hexafluoropropylene and vinylidene fluoride | | --- | --- | | Physical Form | Pellet | | Color | Silver-gray, pale amber | | Odor | None | | Specific Gravity | 1.77 | | Solubility | Low molecular weight esters and ketones | | Storage Stability | Excellent | | Mooney Viscosity, ML 1+10 at 121 °C (250 °F) | Nominal 74 | Safety and Handling Before handling or processing Viton™ A-700, read and follow the recommendations in the Chemours technical bulletin,“Handling Precautions for Viton™ and Related Chemicals”. Viton™ A-700 should be handled similar to other types of Viton™ . For the safe handling of other compounding ingredients, please refer to the respective manufacturers’information. *Viton™ A-700 was formerly named VTR-6769 . Table 1. Polymer Comparison for Viton™ A-700 | | Viton™ A-700 | Viton™ A-500 Viton™ AHV | Viton™ B-600 | Viton™ AL-600 | | --- | --- | --- | --- | --- | | Viton™ A-700 | 97.50 | — — | — | — | | Viton™ A-500 | — | 97.50 — | — | — | | Viton™ AHV | — | — 97.50 | — | — | | Viton™ B-600 | — | — — | 97.50 | — | | Viton™AL-600 | — | — — | — | 97.50 | | MT Black (N-990) | 30 | 30 30 | 30 | 30 | | Maglite® D | 3 | 3 3 | 3 | 3 | | Calcium Hydroxide | 6 | 6 6 | 6 | 6 | | Viton™ Curative No. 50 | 2.5 | 2.5 2.5 | 2.5 | 2.5 | | Mooney Scorch, MS at 121 °C (250 °F) | | | | | | Minimum Viscosity, units | 64 | 48 96 | 65 | 61 | | Time to 1 pt rise, min | 13 | 12 16 | 8 | — | | Time to 2 pt rise, min | — | — 26 | 11 | — | | Time to 5 pt rise, min | — | — — | — | — | | Time to 10 pt rise, min | — | — — | — | — | | Pts rise to 30 min | 2 | 2 5 | 3 | 0 | | MDR at 177 °C (350 °F), 0.5° Arc, 6 min Motor | | | | | | Minimum Viscosity, ML, N·m (in·lb) | 0.3 (2.6) | 0.2 (1 . 7) 0.6 (5 . 5) | 0.3 (2.3) | 0.3 (2.5) | | Scorch Time, ts2, min | 0.8 | 0.9 0.7 | 1.5 | 0.9 | | Maximum Torque, MH, N·m (in·lb) | 3.2 (28.1) | 3.1 (27 . 4) 3.8 (34) | 31 (27.7) | 3.1 (27.6) | | 50% Cure, M50, N·m (in·lb) | 1.7 (15.3) | 1.6 (14 . 6) 2.2 (19 . 7) | 1.7 (15) | 1.7 (15.1) | | Time to 50% Cure, t’50, min | 1.3 | 1.3 1.4 | 2.9 | 1.4 | | 90% Cure, M90, N·m (in·lb) | 2.9 (25.5) | 2.8 (24 . 9) 3.5 (31 . 1) | 2.8 (25.1) | 2.8 (25.1) | | Time to 90% Cure, t’90, min | 1.9 | 2.0 2.2 | 4.0 | 2.0 | | ODR at 177 °C (350 °F), 3°C Arc, 12 min Motor | | | | | | Minimum Viscosity, ML, N·m (in·lb) | 2.3 (20.5) | 1.5 (13 . 5) 4.3 (38) | 2 (17.5) | 2.2 (19.5) | | Scorch Time, ts2, min | 1.7 | 2.0 1.7 | 2.9 | 1.8 | | Maximum Torque, MH, N·m (in·lb) | 13.8 (122) | 13.3 (117 . 5) 15.6 (138) | 11 (97.5) | 13.3 (118) | | 50% Cure, M50, N·m (in·lb) | 8.1 (71.3) | 7.4 (65 . 5) 9.9 (88) | 6.5 (57.5) | 7.8 (68.8) | | Time to 50% Cure, t’50, min | 2.7 | 3.0 3.0 | 4.8 | 2.8 | | 90% Cure, M90, N·m (in·lb) | 12.6 (111.9) | 12.1 (107 . 1) 14.5 (128) | 10.1 (89.5) | 12.2 (108.2) | | Time to 90% Cure, t’90, min | 3.2 | 3.4 4.6 | 5.5 | 3.2 | | | Slabs Cured 10 min at 177 | °C (350 °F) and Post-Cured 24 hr at 232 | °C (450 °F) | | | Stress/Strain—Original at 23 °C (73 °F) | | | | | | 100% Modulus, MPa (psi) | 6.6 (950) | 6.4 (925) 7.7 (1,115) | 5.6 (810) | 6.8 (985) | | Tensile Strength at Break, MPa (psi) | 13.6 (1,975) | 13.9 (2,020) 15.8 (2,295) | 12.5 (1,815) | 14.8 (2,140) | | Elongation at Break,% | 210 | 22

FAQs

What are the main processing advantages of Viton™ A-700?

Viton™ A-700 offers good flow for compression molding, good mold release, less mold fouling, improved compression set resistance, and improved tear properties.

Which application areas are recommended for Viton™ A-700?

It is preferred for fuel systems such as fuel injector O-rings, and it supports compression molding of O-rings, gaskets, sealing devices, extruded cords/profiles/tubing, solution coatings, and blending with other polymers for viscosity modifications.

What does the document provide about product properties and composition?

It states that Viton™ A-700 is a copolymer of hexafluoropropylene and vinylidene fluoride, presented as silver-gray pale amber pellets, with specific gravity 1.77, low solubility in esters and ketones, excellent storage stability, and nominal Mooney viscosity ML 1+10 at 121 °C of 74.

Nov 2, 2026

Uploaded by acoobca