Dongguan Ruichen Sealing Co., Ltd.
TO BE O RING KING
Add to Cart
Black NBR Nitrile Rubber Molded Rubber Products Mold Rubber Parts
We can make molded rubber products/ mold rubber parts according to samples or drawings.
First, please send me 2D drawing, 3D drawing or sample of what you need. From the drawing or sample we can know the dimensions and materials. And then if any special requirement, please also let me know.
Second, we make mold and samples, send the samples to customers for testing.
Third, after the samples confirmed, we start mass production, during production, our QC department will control the quality. Then pack and ship the goods by air or by sea. Production flow as bellow:
Raw material test → Prescribe → Mixing Material → Cutting Material → First Cure →
First Part Inspection → Casual Inspection → Burr Dealing → Eye Inspection → IPQC →
Washing or Grinding → Post Cure → FQC → Packing
Last but not least, after-service. when the products have quality problem, then you can tell me, then we will solve the problems together.
Materials Description:
We usually make the molded rubber products/ mold rubber parts by NBR/ nitrile rubber, which are very cheap and perform good. But when the orperating temperature is very low or very high , then we suggest silicone as the material.
| Item | NBR | NR | SILICONE |
| Operating Temperature | -40℃~100℃ | -50℃~100℃ | -60℃~200℃ |
| Rebound | Good | Excellent | Limited |
| Tear Resistance | Good | Excellent | Poor |
| Weathering Resistance | Limited | Limited | Excellent |
| Oil & Fuel Resistance | Excellent | Poor | Limited |
From the table, we can choose the material according to the operating conditions.
You can check the physical properties as in the datesheet bellow of NBR (nitrile rubber)
| MATERIALS TEST REPORT | |||||
| N7001 (NBR 70 BLACK) COMPOUND | |||||
| ASTM D2000 M2BG 714 A14 B14 EO14 EO34 EA14 F17 | |||||
| Press Cure | Post Cure | ||||
| Sheet : 5min 170℃ | Sheet : 1 hrs 120℃ | ||||
| Button : 10 min 170℃ | Button : 1 hrs 120℃ | ||||
| ORIGINAL PROPERTIES | SPECIFICATION | TEST RESULT | ASTM TEST METHOD | ||
| HARDNESS SHORE A | 70°±5 | 70 | D2240 | ||
| TENSILE STRENGTH, MPA, MIN | ≥14 | 16.47 | D412 | ||
| ULTIMATE ELONGATION, ％, MIN | ≥250 | 336.00 | D412 | ||
| SPECIFIC GRAVITY (g/cm3) | 1.23 | D297 | |||
| HEAT RESISTANCE 70 H . AT 100℃(A14) | D573 | ||||
| CHANGE IN HARDNESS, POINTS | +/-５ | 3 | |||
| CHANGE IN TENSILES STRENGTH, % | +/-15 | －8.65 | |||
| CHANGE IN ULTIMATE ELONGATION,MAX % | -15 | －13.15 | |||
| COMPRESSION SET, MAX, 22H AT 100℃(B14 ) | ≤25 | 12.66 | D395 | ||
| FLUID RESISTANCE NO.1 OIL, 70H AT 100℃ (EO14) | D471 | ||||
| CHANGE IN HARDNESS, POINTS | -5~+10 | 2 | |||
| CHANGE IN TENSILES STRENGTH, MAX % | -25 | 7.10 | |||
| CHANGE IN ULTIMATE ELONGATION,MAX % | -45 | -10.63 | |||
| CHANGE IN VOLUME % | -10~+5 | -2.89 | |||
| FLUID RESISTANCE NO.3 OIL, 70H AT 100℃ (EO34) | D471 | ||||
| CHANGE IN HARDNESS, POINTS | -10~+5 | -5 | |||
| CHANGE IN TENSILES STRENGTH, MAX % | -45 | -9.90 | |||
| CHANGE IN ULTIMATE ELONGATION,MAX % | -45 | -6.92 | |||
| CHANGE IN VOLUME % | 0~+25 | 9.31 | |||
| WATER RESISTANCE:100℃,70H(EA14) | D471 | ||||
| CHANGE IN HARDNESS, POINTS | ±10 | +2 | |||
| CHANGE IN VOLUME % | ±15 | -2.17 | |||
| LOW-TEMPERATURE BRITTLENESS NONBRITTLE | |||||
| AFTER 3MIN AT -40°C (F17) | NONBRITTLE | PASS | D2137 | ||
Image Show:
Item Name: molded rubber products/ mold rubber parts; Material:NBR/ nitrile rubber; Color: Black, custom
FAQ:
1,Are you manufacture or trading company ?
We are manufacture, we have two factories, one located in Shangrao City, Jiangxi Province, one in Dongguan City, Guangdong Province
2,Can I get samples from you ?
Of course, you can. If the samples you need we have in stock, you can get them for free,
only need to pay for the express cost.
3,What's the term of payment ?
Amount < US$2000, 100% paid in advance by paypal or T/T;
Amount >= US$2000, 30% paid in advance, 70% balance before shipment by T/T.
4,Can you produce OEM products ?
Yes, we can produce products by your drawing or samples.
5,What's your MOQ ?
If we have the products in stock , the quantity by your requirement, If we don't have them in stock:
NBR, SIL, SBR, EPDM, NR: 100 US$; PU, HNBR, FKM: 150 US$