Buna-N Rubber
EMCO Industrial Plastics carries a wide selection of Buna-N, also known as Nitrile, rubber grades available in strip, sheet, roll, or custom gasket forms. Buna-N rubber has a good balance of properties and is suitable for oils, greases, fuels, and petroleum applications while working well with water and mild chemicals. Available with a pre-applied Acrylic Adhesive backing.
Our Buna-N materials are available in thicknesses of 0.02” to 2”, including all standard iterations of inch and metric thickness measurements across this range. Continuous strips, rolls, and sheets are available in any width from 1/4” to 36”, and lengths up to 150’. In-house CNC gasket cutting, machining, and waterjet cutting capabilities promote tight tolerances, repeatable accuracy, and rapid part development across our entire Buna-N offering.
Material Highlights
- Excellent physical properties making it tough and durable
- Suitable for oils, greases, fuels, and petroleum applications
- Works well with water and mild chemicals
- Good rebound
- Wide temperature range
Material Grades
| Standard |
Made of industrial grade materials for general purpose use. |
| High Strength |
A stronger & more durable formualation for more demanding applications. |
| Ultra Strength |
Stronger & more durable than standard and high strength formualtions for the most demanding applications |
| Food |
Meets FDA CFR 117.2600 food grade standard. Commonly used in food, beverage, and pharmaceutical processing applications. |
| Fabric Reinforced |
Nylon and Polyester inserts help withstand high stress and frequent flexing. Commonly used for flange gaskets, diaphragm packing, or in heavy-compression applications. |
| Metal Detectable |
Contains metal fillers which allow the rubber to be picked up by metal detection systems, should they tear or fall into the process stream. |
| Military |
Compliant with military specifications (MIL-R & MIL-G). |
| Materials | Grade | Durometer | Color | Texture | Tensile Strength | Elongation | Tear Strength | Compression Set | Temp Range | Specifications |
|---|
| BUNA-N |
Buna-N is ideal for oils, greases, fuels, and petroleum applications. It also works well with water and mild chemicals and has excellent physical properties making it tough and durable. |
| Buna-N |
| H40 |
Standard |
40A |
Black |
Smooth |
1,000 psi |
350% |
20 N/mm |
33% |
-30℃ to 250℃F |
ASTM D2000 BF 407 |
| H50 |
Standard |
50A |
Black |
Smooth |
1,000 psi |
350% |
20 N/mm |
33% |
-30℃ to 250℃F |
ASTM D2000 BF 507 |
| H60 |
Standard |
60A |
Black |
Smooth |
1,000 psi |
350% |
20 N/mm |
33% |
-30℃ to 250℃F |
ASTM D2000 BF 607 |
| H70 |
Standard |
70A |
Black |
Smooth |
1,000 psi |
350% |
20 N/mm |
33% |
-30℃ to 250℃F |
ASTM D2000 BF 707 |
| High Strength Buna-N |
| BHS40 |
High Strength |
40A |
Black |
Smooth |
1,500 psi |
380% |
20 N/mm |
30% |
-30℃ to 250℃F |
ASTM D2000 BF 410 |
| BHS50 |
High Strength |
50A |
Black |
Smooth |
1,500 psi |
380% |
20 N/mm |
30% |
-30℃ to 250℃F |
ASTM D2000 BF 510, ASTM D2000 M2BG510 A14 B14 EO14 EO34 F19 |
| BHS60 |
High Strength |
60A |
Black |
Smooth |
1,500 psi |
380% |
20 N/mm |
30% |
-30℃ to 250℃F |
ASTM D2000 BF 610 |
| BHS70 |
High Strength |
70A |
Black |
Smooth |
1,500 psi |
380% |
20 N/mm |
30% |
-30℃ to 250℃F |
ASTM D2000 BF 710, ASTM D2000 M2BG710 A14 B14 EO14 EO34 F19 |
| H80 |
High Strength |
80A |
Black |
Smooth |
1,500 psi |
125% |
25 N/mm |
30% |
-30℃ to 250℃F |
ASTM D2000 BF 810 |
| H90 |
High Strength |
90A |
Black |
Smooth |
1,500 psi |
100% |
25 N/mm |
25% |
-30℃ to 250℃F |
ASTM D2000 BF 910 |
| Ultra Strength Buna-N |
| HUS50 |
Ultra Strength |
50A |
Black |
Smooth |
2,500 psi |
400% |
25 N/mm |
28% |
-30℃ to 250℃F |
ASTM D2000 BF 517 |
| HUS60 |
Ultra Strength |
60A |
Black |
Smooth |
2,500 psi |
400% |
25 N/mm |
28% |
-30℃ to 250℃F |
ASTM D2000 BF 617 |
| HUS70 |
Ultra Strength |
70A |
Black |
Smooth |
2,500 psi |
400% |
25 N/mm |
28% |
-30℃ to 250℃F |
ASTM D2000 BF 717 |
| FDA Buna-N |
| H50FDA |
Food |
50A |
White |
Smooth |
1,000 psi |
330% |
22 N/mm |
35% |
-30℃ to 250℃F |
ASTM D2000 BF 507, FDA 21 CFR 177.2600 |
| H60FDA |
Food |
60A |
White |
Smooth |
1,000 psi |
330% |
22 N/mm |
35% |
-30℃ to 250℃F |
ASTM D2000 BF 507, FDA 21 CFR 177.2600 |
| Fabric-Reinforced Buna-N |
| HFR60 |
Fabric-Reinforced |
60A |
Black |
Smooth |
1,500 psi |
350% |
20 N/mm |
30% |
-30℃ to 250℃F |
ASTM D2000 BF 610 |
| Metal Detectable FDA Buna-N |
| H60MD |
Metal-Detectable |
60A |
Blue |
Smooth |
1,100 psi |
240% |
18 N/mm |
0.15 |
-30℃ to 250℃F |
ASTM D2000 BF 607 |
| Military Grade Buna-N |
| H40MIL |
Military |
40A |
Black |
Smooth |
1,300 psi |
400% |
20 N/mm |
30% |
-30℃ to 250℃F |
MIL-R-2765, MIL-R-3065D SB 410 F2, MIL-R-3065E, ASTM D2000 M5BG407, MIL-R-6855 Class 1 Grade 40 |
| H50MIL |
Military |
50A |
Black |
Smooth |
1,500 psi |
400% |
20 N/mm |
30% |
-30℃ to 250℃F |
MIL-G-1149 Type 1 Class 5 Grade 50, MIL-R-3065D SB 515 F2, MIL-R-3065E, ASTM D2000 M5BG507, MIL-R-6855 Class 1 Grade 50 |
| H60MIL |
Military |
60A |
Black |
Smooth |
1,600 psi |
300% |
20 N/mm |
30% |
-30℃ to 250℃F |
MIL-R-3065D SB 615 F2, MIL-R-3065E, ASTM D2000 M5BG610, MIL-R-6855 Class 1 Grade 60 |
| H70MIL |
Military |
70A |
Black |
Smooth |
2,000 psi |
250% |
20 N/mm |
30% |
-30℃ to 250℃F |
MIL-R-3065D SB 715 F2, MIL-R-6855 Class 1 Grade 70 |
| H80MIL |
Military |
80A |
Black |
Smooth |
1,800 psi |
100% |
20 N/mm |
28% |
-30℃ to 250℃F |
MIL-F-3065 SB 815 F1, MIL-R-6855 Class 1 Grade 80 |
| Pre-Applied Adhesive |
EMCO Plastics offers pre-applied adhesive to all rubber materials. Options include single or double-sided application and a lined backing. |
| |
Temperature Range |
Adhesive Material |
Thickness |
Shelf Life |
| Acrylic Adhesive |
-30℃ to 250℃F |
Acrylic |
1.3 Mils. |
18 Mo. from Application |
