NR sponge
![](https://www.miyahara-rubber.co.jp/wp-content/uploads/2012/06/miyahara-hp-contents-eng-15.jpg)
Natural rubber widely used in packing and cushioning material and general applications
NR is an abbreviation for natural rubber. Made from sap (latex) tapped from a rubber tree, natural rubber has a tensile strength and elasticity unobtainable from synthetic rubber, that is due to the presence of a material called polyisoprene. With superior wear resistance and cold resistance, natural rubber is also widely used in engineering packing and cushioning materials.
■ Main applications : Carpet, footwear, cushioning, packing and engineering products
■ [ Natural rubber Performance List ]
※ LOT/delivery descriptions list the order placed for an original plate size. LOTs and delivery dates differ for sliced product. For details, contact Miyahara Rubber.
#45N
![](https://www.miyahara-rubber.co.jp/wp-content/uploads/2020/06/nr_45n.jpg)
Original plate dimensions (mm) | 35×1000×1200 |
Color | Black/White |
Hardness (ASKER-C) | 6±3 |
Appearance density (g/cm³) | 0.09±0.05 |
Tensile strength (kPa) | 400 or higher |
Stretch(%) | 220 or higher |
25% compression load(kPa) | 15 – 45 |
Remarks |
■ Black / LOT: Sheet quantity requested Delivery: Same day shipping possible if ordered in the morning
■ White / LOT: 55 Delivery:Approx. 2 weeks
MA#40
![](https://www.miyahara-rubber.co.jp/wp-content/uploads/2020/08/nr_ma40-1.jpg)
Original plate dimensions (mm) | 40×1000×1600 |
Color | Black/White |
Hardness (ASKER-C) | 18±5 |
Appearance density (g/cm³) | 0.08±0.05 |
Tensile strength (kPa) | 400 or higher |
Stretch(%) | 100 or higher |
25% compression load(kPa) | 30 – 60 |
Remarks |
■ Black / LOT:Sheet quantity requested Delivery: Same day shipping possible if ordered in the morning
■ White / LOT:40 Delivery: Approx. 2 weeks
MA#43
![](https://www.miyahara-rubber.co.jp/wp-content/uploads/2020/08/nr_ma43-1.jpg)
Original plate dimensions (mm) | 40×1000×1600 |
Color | Black/Gray |
Hardness (ASKER-C) | 21±5 |
Appearance density (g/cm³) | 0.08±0.05 |
Tensile strength (kPa) | 400 or higher |
Stretch(%) | 100 or higher |
25% compression load(kPa) | 40 – 70 |
Remarks |
■ Black / LOT:Sheet quantity requested Delivery: Same day shipping possible if ordered in the morning
■ Gray / LOT:40 Delivery: Approx. 2 weeks
Thomson #17
![](https://www.miyahara-rubber.co.jp/wp-content/uploads/2020/08/nr_tom17-1.jpg)
Original plate dimensions (mm) | 17×980×1250 20×1000×1000 |
Color | Orange |
Hardness (ASKER-C) | 27±5 |
Appearance density (g/cm³) | 0.24±0.05 |
Remarks |
■ 17×980×1250 / LOT:From 10 sheets From 10 sheets Delivery: Approx. 2 weeks ■ 20×1000×1000 / LOT:10 sheets From 10 sheets Delivery: Approx. 2 weeks
Thomson #35
![](https://www.miyahara-rubber.co.jp/wp-content/uploads/2020/08/nr_tom35-1.jpg)
Original plate dimensions (mm) | 20×1000×1000 |
Color | Orange / Yellow |
Hardness (ASKER-C) | 35±5 |
Appearance density (g/cm³) | 0.27±0.05 |
Remarks |
■ LOT: From 10 sheet Delivery: Approx. 2 weeks
Thomson #50
![](https://www.miyahara-rubber.co.jp/wp-content/uploads/2020/08/nr_tom50-1.jpg)
Original plate dimensions (mm) | 20×1000×1000 |
Color | Orange / Green |
Hardness (ASKER-C) | 42±5 |
Appearance density (g/cm³) | 0.29±0.05 |
Remarks |
■ LOT: From 10 sheet Delivery: Approx. 2 weeks
Thomson #51
![](https://www.miyahara-rubber.co.jp/wp-content/uploads/2020/08/nr_tom51-1.jpg)
Original plate dimensions (mm) | 20×980×970 |
Color | Orange / Green / Blue |
Hardness (ASKER-C) | 47±5 |
Appearance density (g/cm³) | 0.29±0.05 |
Remarks |
■ LOT: From 10 sheet Delivery: Approx. 2 weeks
Thomson #52
![](https://www.miyahara-rubber.co.jp/wp-content/uploads/2020/08/nr_tom52-1.jpg)
Original plate dimensions (mm) | 20×970×970 |
Color | Orange / Green / Blue |
Hardness (ASKER-C) | 52±5 |
Appearance density (g/cm³) | 0.35±0.05 |
Remarks |
■ LOT: From 10 sheet Delivery: Approx. 2 weeks
Thomson #60
![](https://www.miyahara-rubber.co.jp/wp-content/uploads/2020/08/nr_tom60-1.jpg)
Original plate dimensions (mm) | 18×930×930 |
Color | Orange / Green / Blue |
Hardness (ASKER-C) | 60±5 |
Appearance density (g/cm³) | 0.40±0.05 |
Remarks |
■ LOT: From 10 sheet Delivery: Approx. 2 weeks
Thomson #70
![](https://www.miyahara-rubber.co.jp/wp-content/uploads/2020/08/nr_tom70-1.jpg)
Original plate dimensions (mm) | 16×870×870 |
Color | Green |
Hardness (ASKER-C) | 70±5 |
Appearance density (g/cm³) | 0.48±0.05 |
Remarks |
■ LOT: From 10 sheet Delivery: Approx. 2 weeks