O-Rings - Nitrile Rubber

3862 Products In this Selection
  • General purpose. Includes o-rings for dental handpiece applications.
  • Temperature Range: -30oC to +90oC.
  • Nitrile: Excellent resistance to mineral oil based fluids, hydrocarbon fuels, greases and water.
  • Not suitable for aromatic hydrocarbons, chlorinated hydrocarbons, brake fluid and some fire resistant hydraulic fluids.
Additional resources:
Orings Catalogue PDF
Inside Diameter (I.D.) Section (t) Material Hardness Special Applications Indicative
Image
8.50
mm 		2.00
mm 		Nitrile NBR
 Duro 70
 1085008 | OR-00850-200-N70 (4000 Pcs) --- O-Rings - 8.5 mm x 2 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00850-200-N70 (4000 Pcs) O-Rings - 8.5 mm x 2 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$2,643.32 AUD
$2,643.32 AUD
Per 4000
Inside Diameter (I.D.) Section (t) Material Hardness Indicative
Image
8.50
mm 		2.00
mm 		Nitrile NBR
 Duro 70
 1085008 | OR-00850-200-N70 (4000 Pcs) --- O-Rings - 8.5 mm x 2 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00850-200-N70 (4000 Pcs) O-Rings - 8.5 mm x 2 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$2,643.32 AUD
$2,643.32 AUD
Per 4000
8.50
mm 		2.50
mm 		Nitrile NBR
 Duro 70
 1085009 | OR-00850-250-N70 (3100 Pcs) --- O-Rings - 8.5 mm x 2.5 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00850-250-N70 (3100 Pcs) O-Rings - 8.5 mm x 2.5 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$2,085.14 AUD
$2,085.14 AUD
Per 3100
8.50
mm 		2.50
mm 		Nitrile NBR
 Duro 70
 1085009 | OR-00850-250-N70 (3100 Pcs) --- O-Rings - 8.5 mm x 2.5 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00850-250-N70 (3100 Pcs) O-Rings - 8.5 mm x 2.5 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$2,085.14 AUD
$2,085.14 AUD
Per 3100
8.50
mm 		3.00
mm 		Nitrile NBR
 Duro 70
 1085010 | OR-00850-300-N70 --- O-Rings - 8.5 mm x 3 mm
Material: Nitrile NBR   
Part Number: OR-00850-300-N70 O-Rings - 8.5 mm x 3 mm
Contact Us
Item Discontinued - Please contact us if you need a large quantity
8.50
mm 		3.00
mm 		Nitrile NBR
 Duro 70
 1085010 | OR-00850-300-N70 --- O-Rings - 8.5 mm x 3 mm
Material: Nitrile NBR   
Part Number: OR-00850-300-N70 O-Rings - 8.5 mm x 3 mm
Contact Us
Item Discontinued - Please contact us if you need a large quantity |
8.60
mm 		2.40
mm 		Nitrile NBR
 Duro 70
 1085038 | OR-00860-240-N70 (800 Pcs) --- O-Rings - 8.6 mm x 2.4 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00860-240-N70 (800 Pcs) O-Rings - 8.6 mm x 2.4 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$1,047.95 AUD
$1,047.95 AUD
Per 800
8.60
mm 		2.40
mm 		Nitrile NBR
 Duro 70
 1085038 | OR-00860-240-N70 (800 Pcs) --- O-Rings - 8.6 mm x 2.4 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00860-240-N70 (800 Pcs) O-Rings - 8.6 mm x 2.4 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$1,047.95 AUD
$1,047.95 AUD
Per 800
8.73
mm 		1.78
mm 		Nitrile NBR
 Duro 70
 1085057 | OR-00873-178-N70-611 (1300 Pcs) --- O-Rings - 8.73 mm x 1.78 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00873-178-N70-611 (1300 Pcs) O-Rings - 8.73 mm x 1.78 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$1,664.50 AUD
$1,664.50 AUD
Per 1300
8.73
mm 		1.78
mm 		Nitrile NBR
 Duro 70
 1085057 | OR-00873-178-N70-611 (1300 Pcs) --- O-Rings - 8.73 mm x 1.78 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00873-178-N70-611 (1300 Pcs) O-Rings - 8.73 mm x 1.78 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$1,664.50 AUD
$1,664.50 AUD
Per 1300
8.73
mm 		1.78
mm 		Nitrile NBR
 Duro 90
 1085058 | OR-00873-178-N90-611 (1100 Pcs) --- O-Rings - 8.73 mm x 1.78 mm
Material: Nitrile NBR   
Part Number: OR-00873-178-N90-611 (1100 Pcs) O-Rings - 8.73 mm x 1.78 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$1,408.41 AUD
$1,408.41 AUD
Per 1100
8.73
mm 		1.78
mm 		Nitrile NBR
 Duro 90
 1085058 | OR-00873-178-N90-611 (1100 Pcs) --- O-Rings - 8.73 mm x 1.78 mm
Material: Nitrile NBR   
Part Number: OR-00873-178-N90-611 (1100 Pcs) O-Rings - 8.73 mm x 1.78 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$1,408.41 AUD
$1,408.41 AUD
Per 1100
8.76
mm 		1.80
mm 		Nitrile NBR
 Duro 70
 1085129 | OR-00876-180-N70 (1200 Pcs) --- O-Rings - 8.76 mm x 1.8 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00876-180-N70 (1200 Pcs) O-Rings - 8.76 mm x 1.8 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$849.68 AUD
$849.68 AUD
Per 1200
8.76
mm 		1.80
mm 		Nitrile NBR
 Duro 70
 1085129 | OR-00876-180-N70 (1200 Pcs) --- O-Rings - 8.76 mm x 1.8 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00876-180-N70 (1200 Pcs) O-Rings - 8.76 mm x 1.8 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$849.68 AUD
$849.68 AUD
Per 1200
8.90
mm 		1.90
mm 		Nitrile NBR
 Duro 70
 1085148 | OR-00890-190-N70 --- O-Rings - 8.9 mm x 1.9 mm
Material: Nitrile NBR   
Part Number: OR-00890-190-N70 O-Rings - 8.9 mm x 1.9 mm
Contact Us
Item Discontinued - Please contact us if you need a large quantity
8.90
mm 		1.90
mm 		Nitrile NBR
 Duro 70
 1085148 | OR-00890-190-N70 --- O-Rings - 8.9 mm x 1.9 mm
Material: Nitrile NBR   
Part Number: OR-00890-190-N70 O-Rings - 8.9 mm x 1.9 mm
Contact Us
Item Discontinued - Please contact us if you need a large quantity |
8.90
mm 		2.70
mm 		Nitrile NBR
 Duro 70
 1085150 | OR-00890-270-N70 --- O-Rings - 8.9 mm x 2.7 mm
Material: Nitrile NBR   
Part Number: OR-00890-270-N70 O-Rings - 8.9 mm x 2.7 mm
Contact Us
Item Discontinued - Please contact us if you need a large quantity
8.90
mm 		2.70
mm 		Nitrile NBR
 Duro 70
 1085150 | OR-00890-270-N70 --- O-Rings - 8.9 mm x 2.7 mm
Material: Nitrile NBR   
Part Number: OR-00890-270-N70 O-Rings - 8.9 mm x 2.7 mm
Contact Us
Item Discontinued - Please contact us if you need a large quantity |
8.92
mm 		1.83
mm 		Nitrile NBR
 Duro 70
 1085153 | OR-00892-183-N70-904 (1200 Pcs) --- O-Rings - 8.92 mm x 1.83 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00892-183-N70-904 (1200 Pcs) O-Rings - 8.92 mm x 1.83 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$1,543.59 AUD
$1,543.59 AUD
Per 1200
8.92
mm 		1.83
mm 		Nitrile NBR
 Duro 70
 1085153 | OR-00892-183-N70-904 (1200 Pcs) --- O-Rings - 8.92 mm x 1.83 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00892-183-N70-904 (1200 Pcs) O-Rings - 8.92 mm x 1.83 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$1,543.59 AUD
$1,543.59 AUD
Per 1200
9.00
mm 		0.60
mm 		Nitrile NBR
 Duro 70
 NSK Ti-Max X205L Oring Item 40
 O-Ring 9 x 0,6 mm - Gomma nitrilica NBR standard - Nero - Speciale dentale - MBA (confezione da 1)
Material: Nitrile NBR Rubber    Special Applications: NSK D0312090060   
Part Number: O-Ring 9 x 0,6 mm - Gomma nitrilica NBR standard - Nero - Speciale dentale - MBA (confezione da 1) O-Ring 9 x 0,6 mm - Gomma nitrilica NBR standard - Nero - Speciale dentale - MBA (confezione da 1) / O-Rings
Out of Stock
Backorder Now | Backorders for more can be expected around Tue, Dec 10, 2024
$42.68 AUD
$42.68 AUD
Per Each
9.00
mm 		0.60
mm 		Nitrile NBR
 Duro 70
 O-Ring 9 x 0,6 mm - Gomma nitrilica NBR standard - Nero - Speciale dentale - MBA (confezione da 1)
Material: Nitrile NBR Rubber    Special Applications: NSK Ti-Max X205L Oring Item 40    Special Applications: NSK D0312090060   
Part Number: O-Ring 9 x 0,6 mm - Gomma nitrilica NBR standard - Nero - Speciale dentale - MBA (confezione da 1) O-Ring 9 x 0,6 mm - Gomma nitrilica NBR standard - Nero - Speciale dentale - MBA (confezione da 1) / O-Rings
Out of Stock
Backorder Now | | Backorders for more can be expected around Tue, Dec 10, 2024
$42.68 AUD
$42.68 AUD
Per Each
9.00
mm 		1.00
mm 		Nitrile NBR
 Duro 70
 O-Ring 9 x 1 mm - Nitrile NBR - Standard - Nero - Duro 70 - MBA (confezione da 100)
Material: Nitrile NBR   
Part Number: O-Ring 9 x 1 mm - Nitrile NBR - Standard - Nero - Duro 70 - MBA (confezione da 100) O-Ring 9 x 1 mm - Nitrile NBR - Standard - Nero - Duro 70 - MBA (confezione da 100) / O-Rings
120 (12000 pcs) Available
| Backorders for more can be expected around Sun, Dec 29, 2024
$5.14 AUD
$5.14 AUD
Per 100
9.00
mm 		1.00
mm 		Nitrile NBR
 Duro 70
 O-Ring 9 x 1 mm - Nitrile NBR - Standard - Nero - Duro 70 - MBA (confezione da 100)
Material: Nitrile NBR   
Part Number: O-Ring 9 x 1 mm - Nitrile NBR - Standard - Nero - Duro 70 - MBA (confezione da 100) O-Ring 9 x 1 mm - Nitrile NBR - Standard - Nero - Duro 70 - MBA (confezione da 100) / O-Rings
120 (12000 pcs) Available
| | Backorders for more can be expected around Sun, Dec 29, 2024
$5.14 AUD
$5.14 AUD
Per 100
9.00
mm 		1.50
mm 		Nitrile NBR
 Duro 70
 O-ring 9 x 1,50 mm - Nitrile NBR - Standard - Nero - Duro 70 - MBA (confezione da 100)
Material: Nitrile NBR   
Part Number: O-ring 9 x 1,50 mm - Nitrile NBR - Standard - Nero - Duro 70 - MBA (confezione da 100) O-ring 9 x 1,50 mm - Nitrile NBR - Standard - Nero - Duro 70 - MBA (confezione da 100) / O-Rings
190 (19000 pcs) Available
| Backorders for more can be expected around Sun, Dec 29, 2024
$7.14 AUD
$7.14 AUD
Per 100
9.00
mm 		1.50
mm 		Nitrile NBR
 Duro 70
 O-ring 9 x 1,50 mm - Nitrile NBR - Standard - Nero - Duro 70 - MBA (confezione da 100)
Material: Nitrile NBR   
Part Number: O-ring 9 x 1,50 mm - Nitrile NBR - Standard - Nero - Duro 70 - MBA (confezione da 100) O-ring 9 x 1,50 mm - Nitrile NBR - Standard - Nero - Duro 70 - MBA (confezione da 100) / O-Rings
190 (19000 pcs) Available
| | Backorders for more can be expected around Sun, Dec 29, 2024
$7.14 AUD
$7.14 AUD
Per 100
9.00
mm 		1.50
mm 		Nitrile NBR
 Duro 90
 1085226 | OR-00900-150-N90 (1100 Pcs) --- O-Rings - 9 mm x 1.5 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-150-N90 (1100 Pcs) O-Rings - 9 mm x 1.5 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$1,408.41 AUD
$1,408.41 AUD
Per 1100
9.00
mm 		1.50
mm 		Nitrile NBR
 Duro 90
 1085226 | OR-00900-150-N90 (1100 Pcs) --- O-Rings - 9 mm x 1.5 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-150-N90 (1100 Pcs) O-Rings - 9 mm x 1.5 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$1,408.41 AUD
$1,408.41 AUD
Per 1100
9.00
mm 		1.75
mm 		Nitrile NBR
 Duro 90
 1085227 | OR-00900-175-N90 --- O-Rings - 9 mm x 1.75 mm
Material: Nitrile NBR   
Part Number: OR-00900-175-N90 O-Rings - 9 mm x 1.75 mm
Contact Us
Item Discontinued - Please contact us if you need a large quantity
9.00
mm 		1.75
mm 		Nitrile NBR
 Duro 90
 1085227 | OR-00900-175-N90 --- O-Rings - 9 mm x 1.75 mm
Material: Nitrile NBR   
Part Number: OR-00900-175-N90 O-Rings - 9 mm x 1.75 mm
Contact Us
Item Discontinued - Please contact us if you need a large quantity |
9.00
mm 		1.80
mm 		Nitrile NBR
 Duro 70
 1085228 | OR-00900-180-N70 (4100 Pcs) --- O-Rings - 9 mm x 1.8 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-180-N70 (4100 Pcs) O-Rings - 9 mm x 1.8 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$2,709.41 AUD
$2,709.41 AUD
Per 4100
9.00
mm 		1.80
mm 		Nitrile NBR
 Duro 70
 1085228 | OR-00900-180-N70 (4100 Pcs) --- O-Rings - 9 mm x 1.8 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-180-N70 (4100 Pcs) O-Rings - 9 mm x 1.8 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$2,709.41 AUD
$2,709.41 AUD
Per 4100
9.00
mm 		2.00
mm 		Nitrile NBR
 Duro 70
 O-Ring 9 x 2 mm - Gomma nitrilica NBR standard - Nero - Duro 70 - MBA (confezione da 100)
Material: Nitrile NBR Rubber   
Part Number: O-Ring 9 x 2 mm - Gomma nitrilica NBR standard - Nero - Duro 70 - MBA (confezione da 100) O-Ring 9 x 2 mm - Gomma nitrilica NBR standard - Nero - Duro 70 - MBA (confezione da 100) / O-Rings
118 (11800 pcs) Available
| Backorders for more can be expected around Sun, Dec 29, 2024
$10.14 AUD
$10.14 AUD
Per 100
9.00
mm 		2.00
mm 		Nitrile NBR
 Duro 70
 O-Ring 9 x 2 mm - Gomma nitrilica NBR standard - Nero - Duro 70 - MBA (confezione da 100)
Material: Nitrile NBR Rubber   
Part Number: O-Ring 9 x 2 mm - Gomma nitrilica NBR standard - Nero - Duro 70 - MBA (confezione da 100) O-Ring 9 x 2 mm - Gomma nitrilica NBR standard - Nero - Duro 70 - MBA (confezione da 100) / O-Rings
118 (11800 pcs) Available
| | Backorders for more can be expected around Sun, Dec 29, 2024
$10.14 AUD
$10.14 AUD
Per 100
9.00
mm 		2.50
mm 		Nitrile NBR
 Duro 70
 1085233 | OR-00900-250-N70 (2900 Pcs) --- O-Rings - 9 mm x 2.5 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-250-N70 (2900 Pcs) O-Rings - 9 mm x 2.5 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$1,967.77 AUD
$1,967.77 AUD
Per 2900
9.00
mm 		2.50
mm 		Nitrile NBR
 Duro 70
 1085233 | OR-00900-250-N70 (2900 Pcs) --- O-Rings - 9 mm x 2.5 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-250-N70 (2900 Pcs) O-Rings - 9 mm x 2.5 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$1,967.77 AUD
$1,967.77 AUD
Per 2900
9.00
mm 		3.00
mm 		Nitrile NBR
 Duro 70
 1085235 | OR-00900-300-N70 (2200 Pcs) --- O-Rings - 9 mm x 3 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-300-N70 (2200 Pcs) O-Rings - 9 mm x 3 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$1,531.77 AUD
$1,531.77 AUD
Per 2200
9.00
mm 		3.00
mm 		Nitrile NBR
 Duro 70
 1085235 | OR-00900-300-N70 (2200 Pcs) --- O-Rings - 9 mm x 3 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-300-N70 (2200 Pcs) O-Rings - 9 mm x 3 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$1,531.77 AUD
$1,531.77 AUD
Per 2200
9.00
mm 		3.50
mm 		Nitrile NBR
 Duro 70
 1085242 | OR-00900-350-N70 (2000 Pcs) --- O-Rings - 9 mm x 3.5 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-350-N70 (2000 Pcs) O-Rings - 9 mm x 3.5 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$1,404.32 AUD
$1,404.32 AUD
Per 2000
9.00
mm 		3.50
mm 		Nitrile NBR
 Duro 70
 1085242 | OR-00900-350-N70 (2000 Pcs) --- O-Rings - 9 mm x 3.5 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-350-N70 (2000 Pcs) O-Rings - 9 mm x 3.5 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$1,404.32 AUD
$1,404.32 AUD
Per 2000
9.00
mm 		4.00
mm 		Nitrile NBR
 Duro 70
 1085246 | OR-00900-400-N70 (1500 Pcs) --- O-Rings - 9 mm x 4 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-400-N70 (1500 Pcs) O-Rings - 9 mm x 4 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$1,106.41 AUD
$1,106.41 AUD
Per 1500
9.00
mm 		4.00
mm 		Nitrile NBR
 Duro 70
 1085246 | OR-00900-400-N70 (1500 Pcs) --- O-Rings - 9 mm x 4 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-400-N70 (1500 Pcs) O-Rings - 9 mm x 4 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$1,106.41 AUD
$1,106.41 AUD
Per 1500
9.00
mm 		4.50
mm 		Nitrile NBR
 Duro 70
 1085253 | OR-00900-450-N70 --- O-Rings - 9 mm x 4.5 mm
Material: Nitrile NBR   
Part Number: OR-00900-450-N70 O-Rings - 9 mm x 4.5 mm
Contact Us
Item Discontinued - Please contact us if you need a large quantity
9.00
mm 		4.50
mm 		Nitrile NBR
 Duro 70
 1085253 | OR-00900-450-N70 --- O-Rings - 9 mm x 4.5 mm
Material: Nitrile NBR   
Part Number: OR-00900-450-N70 O-Rings - 9 mm x 4.5 mm
Contact Us
Item Discontinued - Please contact us if you need a large quantity |
9.00
mm 		5.00
mm 		Nitrile NBR
 Duro 70
 1085260 | OR-00900-500-N70 (1000 Pcs) --- O-Rings - 9 mm x 5 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-500-N70 (1000 Pcs) O-Rings - 9 mm x 5 mm
Out of Stock
Backorder Now | Backorders for more can be expected around Mon, Jan 06, 2025
$802.50 AUD
$802.50 AUD
Per 1000
9.00
mm 		5.00
mm 		Nitrile NBR
 Duro 70
 1085260 | OR-00900-500-N70 (1000 Pcs) --- O-Rings - 9 mm x 5 mm
Material: Nitrile NBR Rubber   
Part Number: OR-00900-500-N70 (1000 Pcs) O-Rings - 9 mm x 5 mm
Out of Stock
Backorder Now | | Backorders for more can be expected around Mon, Jan 06, 2025
$802.50 AUD
$802.50 AUD
Per 1000
9.00
mm 		6.00
mm 		Nitrile NBR
 Duro 70
 1085293 | OR-00900-600-N70 --- O-Rings - 9 mm x 6 mm
Material: Nitrile NBR   
Part Number: OR-00900-600-N70 O-Rings - 9 mm x 6 mm
Contact Us
Item Discontinued - Please contact us if you need a large quantity
9.00
mm 		6.00
mm 		Nitrile NBR
 Duro 70
 1085293 | OR-00900-600-N70 --- O-Rings - 9 mm x 6 mm
Material: Nitrile NBR   
Part Number: OR-00900-600-N70 O-Rings - 9 mm x 6 mm
Contact Us
Item Discontinued - Please contact us if you need a large quantity |