Buy polymers · Silicones & specialty materials
Buy Polyisobutylene.
Find catalog suppliers and compare buying options for Polyisobutylene. Use the material details below to match the right grade, molecular-weight range, and pack size.
Buying overview
Know what you are comparing.
A low-permeability elastomeric polymer whose molecular-weight window is a primary selection variable.
Common short name: PIB
Use the name and aliases to widen your supplier search.
These fields can change whether two listings are actually comparable.
Supplier listings
Compare Polyisobutylene prices.
The table brings different pack sizes and catalog contexts together. Price per gram is a useful first pass, but it is not a substitute for matching grade and molecular-weight range.
| Supplier / catalog | Specification | Pack | Listed price | Normalized price | Availability |
|---|---|---|---|---|---|
SC SciPoly684 |
PolyisobutyleneSciPoly product page · public variation price | 250 g | USD $50.00 | $0.20 / g | Listed price · verify current pageChecked 2026-09-04 |
SC SciPoly682 |
PolyisobutyleneSciPoly product page · public variation price | 250 g | USD $50.00 | $0.20 / g | Listed price · verify current pageChecked 2026-09-04 |
SC SciPoly681 |
PolyisobutyleneSciPoly product page · public variation price | 250 g | USD $50.00 | $0.20 / g | Listed price · verify current pageChecked 2026-09-04 |
SC SciPoly040D |
PolyisobutyleneSciPoly product page · public variation price | 250 g | USD $50.00 | $0.20 / g | Listed price · verify current pageChecked 2026-09-04 |
SC SciPoly040B |
PolyisobutyleneSciPoly product page · public variation price | 250 g | USD $50.00 | $0.20 / g | Listed price · verify current pageChecked 2026-09-04 |
SC SciPoly040A |
PolyisobutyleneSciPoly product page · public variation price | 250 g | USD $50.00 | $0.20 / g | Listed price · verify current pageChecked 2026-09-04 |
SC SciPoly684 |
PolyisobutyleneSciPoly product page · public variation price | 100 g | USD $25.00 | $0.25 / g | Listed price · verify current pageChecked 2026-09-04 |
SC SciPoly682 |
PolyisobutyleneSciPoly product page · public variation price | 100 g | USD $25.00 | $0.25 / g | Listed price · verify current pageChecked 2026-09-04 |
SC SciPoly681 |
PolyisobutyleneSciPoly product page · public variation price | 100 g | USD $25.00 | $0.25 / g | Listed price · verify current pageChecked 2026-09-04 |
SC SciPoly040D |
PolyisobutyleneSciPoly product page · public variation price | 100 g | USD $25.00 | $0.25 / g | Listed price · verify current pageChecked 2026-09-04 |
SC SciPoly040B |
PolyisobutyleneSciPoly product page · public variation price | 100 g | USD $25.00 | $0.25 / g | Listed price · verify current pageChecked 2026-09-04 |
SC SciPoly040A |
PolyisobutyleneSciPoly product page · public variation price | 100 g | USD $25.00 | $0.25 / g | Listed price · verify current pageChecked 2026-09-04 |
SA Sigma-Aldrich181455 |
Average Mw ~500,000 · Mn ~200,000Chunks · GPC/MALLS | 250 g | USD $289.50 | $1.16 / g | Available to ship todayChecked 2026-09-03 |
SA Sigma-Aldrich181455 |
Average Mw ~500,000 · Mn ~200,000Chunks · GPC/MALLS | 100 g | USD $181.90 | $1.82 / g | Check cart for availabilityChecked 2026-09-03 |
SA Sigma-Aldrich181463 |
Average Mv ~1,200,000Solid or chunks · high molecular weight | 100 g | USD $208.00 | $2.08 / g | Check cart for availabilityChecked 2026-09-03 |
Supplier catalogs
Open the catalogs behind the comparison.
These links lead to current supplier search pages so you can review additional grades, pack sizes, and availability beyond the checked rows above.
SciPoly catalog checked 2026-09-04: 6 matching product pages reviewed and 12 public pack prices captured.
The marketplace is built from material records and checked supplier listings. Browse all polymers or read how comparisons are prepared.