Product System · Grades & Data

Ceramic Press Mold Cores

Specialty prepolymers for the PU layer of ceramic tile press mold cores — standard cores withstand 300,000+ pressing cycles.

Glossy series (TDI + polyether)

Grade	Hardness	NCO %	Curative	Mix Ratio	Pot Life (min)	Tensile (MPa)	Elongation (%)	Tear (kN/m)	Rebound (%)	Density (g/cm³)
YC-900	90A	4.0	MOCA (yellow)	11.5	12-16	45	450	100	46	1.11
YC-902	92A	4.7	MOCA (yellow)	13.5	11-15	40	430	105	45	1.13
YC-903	93A	5.2	MOCA (yellow)	15.0	9-15	47	420	105	42	1.13
YC-904	94A	5.8	MOCA (yellow)	16.5	6-8	48	400	120	40	1.13
YC-905	95A	6.3	MOCA (yellow)	18.0	6-8	45	400	120	40	1.13
YC-908	98A	7.3	MOCA (yellow)	21.0	4-8	48	300	125	40	1.16
YC-985	85A	3.7	MOCA (yellow)	10.5	15-20	30	550	80	55	1.08

Roof-tile series (TDI + polyester)

Grade	Hardness	NCO %	Curative	Mix Ratio	Pot Life (min)	Tensile (MPa)	Elongation (%)	Tear (kN/m)	Rebound (%)	Density (g/cm³)
YC-180	80A	3.0	MOCA (yellow)	8.9	12-16	42	650	70	25	1.23
YC-183	83A	3.3	MOCA (yellow)	9.5	10-15	45	610	90	25	1.24
YC-185	85A	3.6	MOCA (yellow)	10.5	8-12	43	600	90	29	1.25
YC-189	89A	3.8	MOCA (yellow)	11.0	8-12	43	600	87	35	1.25
YC-193	93A	5.1	MOCA (yellow)	14.5	7-11	48	650	120	25	1.28

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Soft-Face Synchronous Belts

Key moving parts for tile polishing and edge grinding — precise, stable, long-life under heavy tension, friction and heat. Custom elastomers per production scenario.

Face layer (two-component polyester)

Grade	Hardness	NCO %	Curative	Mix Ratio	Pot Life (min)	Tensile (MPa)	Elongation (%)	Tear (kN/m)	Rebound (%)	Density (g/cm³)
YC-147A	47A	3.0	YC-147B	100:35	7-9	25	650	30	45	1.28
YC-157A	57A	3.0	YC-157B	100:24	6-10	30	700	45	51	1.28
YC-160A	60A	2.8	YC-160B	100:25	8-12	40	700	47	43	1.28
YC-165A	65A	3.8	YC-165B	100:35	8-10	45	660	55	44	1.28

Base layer (TDI + polyether)

Grade	Hardness	NCO %	Curative	Mix Ratio	Pot Life (min)	Tensile (MPa)	Elongation (%)	Tear (kN/m)	Rebound (%)	Density (g/cm³)
YC-903J	93A	5.1	MOCA (yellow)	15	8-12	42	400	110	42	1.13
YC-903JA	93A	3.2	MOCA (white)	15	8-12	45	400	115	43	1.14
YC-904P	94A	5.8	MOCA (yellow)	16.5	5-8	45	400	110	39	1.13
YC-PDJ	94A	5.8	MOCA (yellow)	16.5	8-12	45	400	115	38	1.13

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Oilfield Valve Rubber

Valve rubber and mud-pump fluid-end sealing materials for fracturing operations: heat, compression, deformation, puncture, fatigue, hydrolysis and abrasion resistant.

Grade	Hardness	NCO %	Curative	Mix Ratio	Pot Life (min)	Tensile (MPa)	Elongation (%)	Tear (kN/m)	Rebound (%)	Density (g/cm³)
YC-MP930	93A	8.4	B-1	8.6	6-10	40	450	120	60	1.11
YC-MP940	94A	8.7	B-1	8.9	8-12	45	480	120	45	1.13
YC-MP950	95A	9.5	B-1	9.7	8-12	45	460	120	43	1.13
YC-ML950	96A	10.2	B-1	10.4	3-5	48	550	140	34	1.15

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Mine Hydraulic Support Seals

Water-seal prepolymers for hydraulic supports immersed long-term in emulsion — abrasion, hydrolysis, swelling and extrusion resistant. Supplied to leading seal manufacturers.

Grade	Hardness	NCO %	Curative	Mix Ratio	Pot Life (min)	Tensile (MPa)	Elongation (%)	Tear (kN/m)	Rebound (%)	Density (g/cm³)
YC-905	95A	6.3	MOCA (yellow)	18.0	6-8	48	400	120	40	1.13
YC-905U	95A	6.3	MOCA (white)	18.5	4-6	50	500	110	45	1.13
YC-MP930	93A	8.4	B-1	8.6	6-10	40	450	120	60	1.11
YC-MP940	94A	8.7	B-1	8.9	8-12	45	480	120	45	1.13
YC-MP950	95A	9.5	B-1	9.7	8-12	45	460	120	43	1.13

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Screen Plates · Scrapers · Pipe Linings · Equipment Coating

Wear- and corrosion-resistant prepolymers for coal washing, mineral processing, grinding, conveying and tailings: wide hardness range, high tensile and tear, easy processing.

Grade	Hardness	NCO %	Curative	Mix Ratio	Pot Life (min)	Tensile (MPa)	Elongation (%)	Tear (kN/m)	Rebound (%)	Density (g/cm³)
YC-193	93A	5.1	MOCA (yellow)	14.5	7-11	48	650	120	25	1.28
YC-903	93A	5.2	MOCA (yellow)	15.0	9-15	47	420	105	42	1.13
YC-MP930	93A	8.4	B-1	8.6	6-10	40	450	120	60	1.11

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Seals & Cartridge Belts

Sealing materials for demanding hydraulic and pneumatic duty, plus maintenance-free PU + steel-fiber cartridge synchronous belts.

Seals

Grade	Hardness	NCO %	Curative	Mix Ratio	Pot Life (min)	Tensile (MPa)	Elongation (%)	Tear (kN/m)	Rebound (%)	Density (g/cm³)
YC-902	92A	4.7	MOCA (yellow)	13.5	11-15	40	430	105	28	1.13
YC-903U	93A	5.2	MOCA (white)	15	6-10	45	500	120	27	1.11
YC-905U	95A	6.3	MOCA (white)	18.5	4-6	50	500	110	27	1.13
YC-965DU	65D	7.9	MOCA (white)	22.5	3-5	48	250	140	26	1.18

PU cartridge belt

Grade	Hardness	NCO %	Curative	Mix Ratio	Pot Life (min)	Tensile (MPa)	Elongation (%)	Tear (kN/m)	Rebound (%)	Density (g/cm³)
YC-985K	85A	3.8	MOCA (white)	10.5	6-10	30	450	80	55	1.08

New · YC-TS45AB two-component elastomer

TDI–PTMEG two-component PU elastomer: low hardness (~45A), high strength, excellent rebound and aging resistance — for coating, seals and gaskets. Melt part A at 70–80 °C when solidified and hold both parts at temperature for flow; weigh strictly per ratio and mix thoroughly. Full data via TDS.

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PU Coated Wheels

For elevator door hanger wheels, guide shoes and industrial rollers: abrasion- and tear-resistant, high load, low heat build-up and noise. Customer wheels serve world-leading elevator OEMs.

Grade	Hardness	NCO %	Curative	Mix Ratio	Pot Life (min)	Tensile (MPa)	Elongation (%)	Tear (kN/m)	Rebound (%)	Density (g/cm³)
YC-904MG	94A	5.8	MOCA (white)	16.5	4-6	45	400	120	43	1.12
YC-903U	93A	5.2	MOCA (white)	15	6-10	45	500	120	41	1.11
YC-905U	95A	6.3	MOCA (white)	18.5	4-6	50	500	110	45	1.13

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Concrete Pump Pistons

Key wear part of concrete pumps: exceptional abrasion, tear, alkali and heat-pressure resistance — service life over 30,000 m³ pumping C30 concrete.

Grade	Hardness	NCO %	Curative	Mix Ratio	Pot Life (min)	Tensile (MPa)	Elongation (%)	Tear (kN/m)	Rebound (%)	Density (g/cm³)
YC-904H	94A	5.8	MOCA (yellow)	16.5	6-10	45	400	110	43	1.12
YC-904U	94A	5.8	MOCA (white)	16.5	5-8	47	410	115	43	1.12
YC-MP940	94A	8.7	B-1	8.9	8-12	45	480	120	45	1.13

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Polyurethane Rollers

For paper, textile, printing, metal processing and glass industries: abrasion and solvent resistant, heat tolerant, low heat build-up, low permanent set, good hand-casting behavior.

Grade	Hardness	NCO %	Curative	Mix Ratio	Pot Life (min)	Tensile (MPa)	Elongation (%)	Tear (kN/m)	Rebound (%)	Density (g/cm³)
YC-985	85A	3.7	MOCA (yellow)	10.5	15-20	30	550	80	55	1.08
YC-900	90A	4.0	MOCA (yellow)	11.5	12-16	45	450	100	46	1.11
YC-902	92A	4.7	MOCA (yellow)	13.5	11-15	40	430	105	45	1.13
YC-965D	65D	7.9	MOCA (white)	22.5	3-5	45	250	120	30	1.18
YC-183	83A	3.3	MOCA (yellow)	9.5	10-15	45	610	90	25	1.24
YC-185	85A	3.6	MOCA (yellow)	10.5	8-12	43	600	90	29	1.25
YC-189	89A	3.8	MOCA (yellow)	11.0	8-12	43	600	87	35	1.25

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PU Potting & Structural Adhesives · 2026 V1.0

Five flagship grades across thermal structural, appliance potting, automotive structural and optical-clear categories, plus a fast-cure series. Shore A30–D80, 100% solids, RoHS compliant.

Flagship comparison matrix

Property	GF-037DR Thermal structural	GF-075DR High-hardness	GF-M720 Appliance potting	GF-GM680 Clear LED	YE-80DAB Automotive
Appearance	Black	Clear / light yellow	White	Water-clear	Black
Hardness	Shore D 35	Shore D 75	Shore A 30	Shore A 80	Shore D 80
Thermal cond. W/(m·K)	≥ 0.8	≥ 1.2	≥ 0.20	≥ 0.18	≥ 0.2
Dielectric strength kV/mm	≥ 16	≥ 14	≥ 15	≥ 18	≥ 12
Volume resistivity Ω·cm	≥ 10¹⁴	≥ 10¹³	≥ 2×10¹¹	≥ 2×10¹¹	≥ 2×10¹¹
Tensile MPa	≥ 5	≥ 8	> 0.7	> 25	≥ 40
Flammability	V-0	V-0	V-0	V-0	—
Service temp. °C	−40 – 110	−40 – 110	−40 – 105	−40 – 105	−40 – 110

GF-037DR / GF-075DR also offer excellent electrical insulation for potting duty. All data per GB/T, ASTM, UL, IEC at (23±2) °C, (50±5) %RH.

Flagship grades

Grade	Hardness	Key Properties	Typical Applications
GF-037DR	Shore D 35	Thermal ≥0.8 W/(m·K) · Dielectric ≥16 kV/mm · UL94 V-0	EV battery modules · power modules · sensors · LED drivers
GF-075DR	Shore D 75	Thermal ≥1.2 W/(m·K) · transparent/light-yellow · high strength	Power modules · HV components · high-power LED · precision instruments
GF-M720	Shore A 30	Soft, low-stress · insulating, moisture-proof · V-0	Washing machines / dishwashers, appliance control boards
GF-GM680	Shore A 80	Water-clear · anti-yellowing · high light transmission	LED strips / signage / luminaires
YE-80DAB	Shore D 80	Tensile ≥40 MPa · thixotropic · structural bonding	Automotive wire harnesses · chip-leg encapsulation

Two-component fast-cure series

Grade	Hardness	Hardener	Ratio	Pot Life (min)	Features	Applications
GF-7669A/B	25A/70A	GF-7669B	1:1	6-8	Eco-friendly, fast-cure, waterproof, weather-resistant	Acoustic electronics · automotive radar · filters · energy storage
GF-9060A/B	80A	GF-9060B	1:1	8-10	Water-clear, anti-yellowing, RT mixing	LED potting
GF-9080A/B	70D	GF-9080B	1:1	5-10	Fast-cure, tough, high hardness	PCBs · transformers · electronic cards

Usage: weigh A:B precisely per TDS (wrong ratio slows cure, softens or prevents curing); use mixed material in one go; keep tools and containers moisture-free; substrates must be clean, dry, oil-free; trial on samples first; manual gun or 2K dispensing machines.
Curing: ~24–72 h at (23±2) °C to service strength, 7 d to final properties; 2–4 h at 60–80 °C; rest 24 h before electrical testing.
Storage: 10–25 °C, cool, dry, dark; shelf life 6–8 months in sealed original packaging (per grade TDS); non-hazardous, ship as general chemicals.
Safety: uncured part A contains isocyanates — ventilate, wear gloves and goggles; see MSDS / SDS per grade (available on request).

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PUR Hot-Melt Adhesives

Moisture-curing reactive polyurethane hot melts with excellent adhesion to wood, metal, glass, rubber, plastics, leather, textiles and paper. 100% solids.

Grade	Solids	Viscosity mPa·s (120 °C)	Equipment Temp.	Features	Applications
LEPUR-1001 Seamless underwear	100%	1000±300	90–120 °C	Odorless after cure · wash & fold resistant	Seamless / bonded underwear
LEPUR-2001 Garment fabrics	100%	20000±3000	90–130 °C	Odorless after cure	Garment, bedding, luggage fabric lamination
LEPUR-3001 Hygiene	100%	1000±300	90–120 °C	Non-yellowing · odor-free · no bleed-through	Masks, medical nonwovens, hygiene products
LEPUR-4001 Automotive nonwoven	100%	40000±6000	90–140 °C	Low VOC · wash-resistant · no bleed-through	Trunk liners, acoustic felt, carpet lamination
LEPUR-7001 Flooring	100%	20000±4000	90–130 °C	No discoloration or bleed · flat, bubble-free	Laminate / hardwood / PVC floor lamination
LEPUR-8001 Profile wrapping	100%	50000±5000	100–140 °C	No wrinkling · fast set · high green strength	Wood mouldings, aluminium doors, wall panels
LEUR-9001 Electronic	100%	4000–6000	110–120 °C	Pressure-sensitive · one-component · insulating	Electronics assembly & potting

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PU Rubber Compounds (MPU)

Millable polyurethane rubber from polyether polyols and MDI; processed like conventional rubber, sulfur or peroxide cure, ideal for Shore A50–95 roller covers, seals, O-rings, dampers and soles.

Grade	Hardness	System	Mooney Viscosity	Cure System	Tensile Strength	Service Temp.
LMU101	30A–95A	Unsaturated polyether	20–63	Sulfur / peroxide	up to 32–35 / 25–28 MPa	−60–100 °C (120 °C short-term)
LMU201	40A–95A	Unsaturated polyether	30–80	Sulfur / peroxide	up to 35–38 / 26–29 MPa	−50–110 °C (120 °C short-term)
LMU202	30A–95A	Saturated polyester	30–80	Peroxide	up to 30–33 MPa	−55–120 °C (140 °C short-term)

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Microcellular Foam Elastomers

LEFP series: abrasion, flex and tear resistant with adjustable hardness and density, room-temperature cure, fast demold — for automotive pads, rail sleeper pads, tires and shoe soles.

Hardness (Shore A)	Density (g/cm³)	Elongation (%)	Tensile (MPa)	Tear (kN/m)	Rebound (%)
53	0.49	168.2	3.0	10	25
74	0.54	150.4	4.0	13	23
63	0.78	695.2	7.1	48	44

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Note: all data are typical values at (23±2) °C / (50±5) %RH and vary with field conditions; not a specification commitment. For full TDS / SDS or custom grades: +86 757 8666 171 · Mobile/WhatsApp +86 134 1573 8784 (Li Zelin) · leiqizhile@gdlqzl.cn　·　中文版