NBR-PVC
Matrix
also Nitrile Rubber, Buna-N
NBR-PVC = nBR/PVC blend
Choose for outdoor hose covers, cable jackets and fuel-line outer layers needing ozone/UV resistance with oil resistance.
Values for the NBR-PVC condition
Other NBR grades and fills
NBR is listed in 14 conditions; see the grade overview at NBR.
Compare all 14 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Closed-cell / expanded NBR foam | Pick for low-closure-force gasketing, oil-resistant insulation and vibration/acoustic padding where compressibility beats strength. | — | 2 | 150 | 20 Shore A |
Shore A 40 | Soft, highly conformable compound for low-pressure gaskets and diaphragms on rough flanges. | — | 8 | 550 | 40 Shore A |
Shore A 50 | Compliant sealing compound for static gaskets and low-load bellows. | — | 11 | 500 | 50 Shore A |
Flame-retardant compound | Halogen or ATH loaded compound for mining hose, cable jackets and rail applications requiring flame/smoke ratings. | — | 11 | 280 | 25 Shore D |
Shore A 60 | General O-ring hardness for moderate-pressure hydraulic and pneumatic seals. | — | 13 | 450 | 60 Shore A |
Low-temperature grade | Pick for cold-climate seals down to about -45 °C, accepting more swell in fuels and oils. | — | 14 | 450 | 18 Shore D |
NBR-PVCThis page NBR/PVC blend | Choose for outdoor hose covers, cable jackets and fuel-line outer layers needing ozone/UV resistance with oil resistance. | — | 14 | 350 | 22 Shore D |
Conductive / antistatic | Specify for fuel-handling hose liners, rollers and pads where static must be bled off. | — | 14 | 280 | 28 Shore D |
SolidDefault Dense vulcanized compound | Default choice for O-rings, gaskets, oil seals and hose liners where sealing force and oil resistance matter. | — | 16 | 400 | 22 Shore D |
Shore A 70 | The default NBR seal hardness; best balance of extrusion resistance and sealability. | — | 16 | 400 | 22 Shore D |
Shore A 80 | Harder compound for high-pressure seals, backup rings and shaft seals resisting extrusion. | — | 18 | 300 | 30 Shore D |
High-ACN | Choose for aromatic fuels, biodiesel and aggressive oils where swell must be minimized; accepts a warmer low-temperature limit. | — | 18 | 350 | 25 Shore D |
Shore A 90 | Use where extrusion/gap resistance or wear dominates (rod wipers, high-pressure back-ups); low sealing compliance. | — | 20 | 200 | 38 Shore D |
Carboxylated nitrile | Use where abrasion and tear resistance govern (rod seals, rollers, gloves); slightly stiffer and less compression-set tolerant. | — | 24 | 350 | 25 Shore D |
What is NBR-PVC?
NBR-PVC is NBR in the NBR-PVC condition — choose for outdoor hose covers, cable jackets and fuel-line outer layers needing ozone/UV resistance with oil resistance. NBR-PVC has a tensile strength of 14 MPa (2.03 ksi), weaker than 75% of polymer grades. Elongation at break is 350% and the elastic modulus is 0.01 GPa (0.001 Msi). NBR-PVC has a density of 1.35 g/cm³ (0.0488 lb/in³), heavier than 75% of polymer grades. Its glass-transition temperature is -35°C (-31 °F). Solid is the default condition FabDigit quotes; NBR-PVC is available on request or by drawing note.
Advantages
- Ductile — tolerates forming and impact — 350%, better than 84% of polymer grades
- Good UV / weathering resistance — 65/100, better than 81% of polymer grades
Limitations
- Needs corrosion protection — 60/100, worse than 89% of polymer grades
- Difficult to machine — 30/100, worse than 87% of polymer grades
- Low stiffness — 0.01 GPa (0.001 Msi), worse than 84% of polymer grades
- Difficult to weld — 10/100, worse than 82% of polymer grades
- Heavy — 1.35 g/cm³ (0.0488 lb/in³), worse than 75% of polymer grades
NBR-PVC properties
Typical room-temperature values for NBR-PVC; 18 are specific to this condition. Other listed values are NBR reference data and may not represent this condition. Bars are the position among polymer grades.
Physical4
NBR-PVC has a density of 1.35 g/cm³ (0.0488 lb/in³), heavier than 75% of polymer grades. Its glass-transition temperature is -35°C (-31 °F).
Mechanical9
NBR-PVC has a tensile strength of 14 MPa (2.03 ksi), weaker than 75% of polymer grades. Elongation at break is 350% and the elastic modulus is 0.01 GPa (0.001 Msi).
Thermal8
NBR-PVC is rated for continuous service to 90°C (194 °F). It conducts heat at 0.22 W/m·K (0.127 BTU/hr·ft·°F), better than 60% of polymer grades. Thermal expansion is 230 µm/m·K (127.8 µin/in·°F).
Electrical5
NBR-PVC is an electrical insulator with a dielectric strength of 16 kV/mm (406.4 V/mil) and a resistivity of 1×10⁹ Ω·m.
Chemical & Environmental3
Corrosion resistance is good (60/100), worse than 89% of polymer grades. UV resistance is good.
Sustainability4
Producing a kilogram of NBR-PVC takes about 110 MJ of energy and emits 4.5 kg of CO₂ — more than 64% of polymer grades. Typical recycled content is 5%.
Manufacturability5
NBR-PVC's machinability is poor (30/100, worse than 87% of polymer grades); weldability not recommended (10/100); formability good (65/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with NBR-PVC
Is NBR easy to machine?
Cured NBR can be lathe-turned, die-cut, waterjet or cryo-ground with very sharp tools and air cooling; expect tearing and dimensional rebound rather than chip formation.
Can NBR be welded?
Not weldable — join by cold-bonding cyanoacrylate/contact adhesive or by hot vulcanized splicing with uncured gum and a press.
Can NBR be formed, bent or molded?
Compression, transfer or injection molded and cured 3–10 min at 150–200 °C (sulfur or peroxide), with post-cure 2–4 h at 150 °C for low compression set; allow ~2 % shrinkage.
What surface finishes work on NBR?
Deflash by cryogenic tumbling; surfaces can be talc/PTFE dusted, chlorinated or plasma treated to cut friction, and no painting/plating is normally used.
NBR chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| acrylonitrilewt % of the copolymer; sets oil resistance vs low-temperature flexibility | 18 – 50 | 34 |
| carbon blackphr of compound, N550/N774 typical reinforcing filler | 20 – 60 | 40 |
| plasticizer (ester/DOP-type)phr, for softness and low-temperature performance | 0 – 20 | 8 |
| zinc oxidephr, cure activator | ≈ 5 | 5 |
| stearic acidphr, activator/process aid | ≈ 1 | 1 |
| sulfur + acceleratorsphr; peroxide cure used for lower compression set | 0.3 – 2.5 | 1.5 |
| antioxidant / antiozonantphr, TMQ/amine type | ≈ 2 | 2 |
| butadienebalance of the copolymer backbone | balance | — |
NBR-PVC — frequently asked
What is NBR-PVC used for?
NBR-PVC is typically used for O-rings, fuel hoses and hydraulic seals. In short: oil-resistant nitrile rubber.
What is the tensile strength of NBR-PVC?
NBR-PVC has a typical tensile strength of 14 MPa (2.03 ksi) — weaker than 75% of polymer grades. Strength varies by condition: see the 14 listed tempers.
Is NBR-PVC easy to machine?
Not especially — machinability is rated poor (30/100, worse than 87% of polymer grades). Cured NBR can be lathe-turned, die-cut, waterjet or cryo-ground with very sharp tools and air cooling; expect tearing and dimensional rebound rather than chip formation.
Can NBR-PVC be welded?
Not readily — weldability is rated not recommended (10/100). Not weldable — join by cold-bonding cyanoacrylate/contact adhesive or by hot vulcanized splicing with uncured gum and a press.
What surface finishes work on NBR-PVC?
Deflash by cryogenic tumbling; surfaces can be talc/PTFE dusted, chlorinated or plasma treated to cut friction, and no painting/plating is normally used.
Can NBR-PVC be formed, bent or molded?
Compression, transfer or injection molded and cured 3–10 min at 150–200 °C (sulfur or peroxide), with post-cure 2–4 h at 150 °C for low compression set; allow ~2 % shrinkage.
What is the maximum service temperature of NBR-PVC?
NBR-PVC is rated for continuous use to about 90°C (194 °F), and briefly to 130°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in NBR-PVC?
Yes — NBR-PVC is available for injection molding; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM D2000 — Classification System for Rubber Products in Automotive Applications — ASTM (2020)
- ASTM D412 / D2240 / D395 / D624 (tensile, hardness, compression set, tear) — ASTM (2021)
- ASM Engineered Materials Handbook Vol. 2 — Engineering Plastics & Elastomers — ASM International (1988)
- Rubber Technology / Science and Technology of Rubber (elastomer property tables) — Springer / Academic Press (2013)
- Nitrile (NBR) seal compound and O-ring material datasheets — Parker Hannifin / Trelleborg Sealing Solutions (2023)
- Perbunan / Krynac NBR grade datasheets — Arlanxeo (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.