X3016A/B two-component cast polyurethane system is tailor-made for manufacturing all kinds of automotive elastomer accessories, featuring balanced Shore 70A softness, outstanding mechanical durability and stable casting process. Its core strengths serving auto parts production are listed below

1. Balanced 70A hardness optimizes vehicle NVH performance

The finished elastomer maintains stable Shore 70A hardness after full post-vulcanization. This moderate soft-hard balance delivers excellent vibration damping and noise reduction effects, perfectly matching automotive suspension bushings, shock limit blocks, anti-collision buffers and chassis elastic pads. It filters road vibration effectively without sacrificing load-bearing stiffness, greatly upgrading vehicle driving comfort and lowering interior noise. With 45% rebound resilience, it absorbs impact energy repeatedly during long-term driving cycles and avoids permanent sagging or hardening.

2. Class-leading mechanical durability extends service life of auto wearing parts

Formulated with MDI polyester prepolymer, the material owns premium mechanical indexes far superior to ordinary natural rubber and low-end PU materials, solving frequent abrasion & cracking pain points of moving auto accessories:

Tensile strength up to 41 MPa and breaking elongation of 580%: withstands frequent stretching, torsion and impact on drive shaft buffers, clutch damping elements without fracture;

Ultra-high angle tear strength at 80 KN/m: resists crack expansion under bumpy road loads, ideal for thin-walled elastic automotive sealing components;

Low DIN abrasion loss of only 22 mm³: significantly reduces wear of auto trolley rollers, door anti-collision blocks and brake auxiliary wear-resistant parts, cutting vehicle maintenance and replacement costs. Stable modulus data (3.7 MPa 100% Modulus / 6 MPa 300% Modulus) guarantees consistent bearing capacity for chassis load-bearing accessories under long cyclic compression.

3. Excellent oil resistance fit for engine compartment & powertrain parts

Polyester molecular structure endows finished auto parts with prominent resistance to engine oil, gear oil and grease erosion. Unlike common rubber that swells, softens or cracks after contacting lubricants, X3016 elastomer retains stable size and mechanical performance. It is applicable for oil-resistant shock pads, transmission elastic gaskets and power system sealing rings installed near engines and gearboxes.

4. Stable, controllable casting process suitable for mass automotive production

The system adopts pre-formulated A and B two components without extra addition of curing agents or catalysts on-site, minimizing formula errors in mass production of auto accessories:

Clear reaction cycle: 5 min gel time and 35 min demold time, supporting continuous assembly line casting; post vulcanization at 90℃ for 16 h fully activates all material performance;

Separated standardized preheating parameters match raw material characteristics: X3016A transparent liquid needs no homogenization after heating; solid X3016B only requires simple electric stirring after melting to eliminate layering defects;

Both components support vacuum degassing, producing void-free auto elastomer parts with uniform internal structure and stable hardness batch-to-batch;

Fixed mixing ratio (A:100 / B:141.34) simplifies weighing operation for workshop workers and avoids performance fluctuation caused by mismatched proportion.

5. Long shelf life reduces raw material inventory loss for auto parts factories

Sealed drums can be stored below 30℃ without special constant-temperature warehouse: X3016A prepolymer has a 6-month shelf life with stable NCO content; X3016B polyol curing agent reaches 12-month storage life, no premature curing or performance degradation during stockpiling. It lowers inventory capital occupation and waste risk for auto component manufacturers.

Precautions for storage and usage

Precautions for storage and usage
Item	Unit	X3016A	X3016B
Optimum storage temperature for sealed drums		＜30	＜30
Shelf time(seales drums)	Month	6	12
Preheating time/preheating temperature	h/	12/45	24/70
It needs to be homogenized before processing	-	No need	Need
Need degassing	-	Need	Need

X3016A/X3016B Physical properties and usage requirements

Item	Appearance(25℃)	Viscosity mPa.s	NCO%	Relative density at processing temperature/cm³	Preheating condition before useh/℃
X3016A	Viscous and transparency liquid	410/50℃	16.4±0.2	1.15	12/45
X3016B	White solid	2000/60℃	-	1.17	24/80

X3016A/X3016B Product processing technology and physical property index

Hardness	70A
X3016A/g	100
X3016B/g	141.34
X3016A Mixing temperature℃	40
X3016B Mixing temperature℃	60-75
Mold temperature℃	90-100
Gel time, min	5
Demold time, min	35
Post vulcanization temperature and time	90
Hardness,A	70
Resilience,%	45
100%Modulus,MPa	3.7
300%Modulus,MPa	6
Tensile strength,MPa	41
Elongation,%	580
Tear strength (angle),KN/m	80
DIN Abrasion loss,mm³	22

product-669-453 product-612-456

Package

20kgs/drum; 200kgs/drum; 1000kgs/IBC.

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