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Lenz-Laborglas Stopcocks, Straight Bore with PTFE Plug, NS 18,8 Bore mm 4

Bore

Ground size

Specifications

Compare models
Bore
4.0 mm
Ground size
NS 18,8
Material
Boro 3.3
Material stopcock
PTFE key
Standard
DIN 12541-1
UNSPSC
41104812
With stopcock retaining device
Yes

NZ $102.69

Inc. GST

Available soon

Product description

The Lenz-Laborglas Straight-Bore Stopcock NS 18.8 with a 4 mm bore is precision-engineered from DURAN® borosilicate glass 3.3 and fitted with a PTFE plug for outstanding chemical resistance and smooth operation. This stopcock includes a retaining device for enhanced safety and is ideal for laboratory use in flow control, vacuum systems, and distillation setups.

Key Features:

  • Brand: Lenz-Laborglas
  • Ground Joint Size: NS 18.8
  • Bore Diameter: 4 mm
  • Material: DURAN® (borosilicate glass 3.3)
  • Stopcock Plug: PTFE key for chemical-resistant, durable sealing
  • Design: Straight-bore configuration with retaining device
  • Application: Suitable for distillation, filtration, vacuum systems and precise fluid regulation in laboratory setups

The Lenz-Laborglas Straight-Bore Stopcock with PTFE Plug offers premium material quality, reliable flow control and long-term durability—ideal for demanding laboratory and analytical applications.

Accessories

Stopcock plugs, PTFE

ProductMaterialBoreMfr#Part#AvailabilityPrice
PTFE4.0 mm021714046.306 551In stockNZ $43.36
PTFE2.5 mm021712026.306 550In stockNZ $38.80
PTFE2.5 mm021714026.801 361NZ $38.80
PTFE4.0 mm021718047.018 955NZ $54.77
PTFE1.5 mm021712017.072 146NZ $36.51
PTFE8.0 mm021724087.657 006NZ $146.05
PTFE6.0 mm021721067.603 864NZ $91.28
PTFE6.0 mm021718067.630 235NZ $59.33
PTFE10.0 mm021729106.266 985NZ $216.80

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Stopcocks, borosilicate glass 3.3, with capillary side arms

ProductMaterialMaterial stopcockMfr#Part#AvailabilityPrice
Boro 3.3Glass key022214029.115 613In stockNZ $70.74

Frequently asked questions

It is precision-engineered from DURAN® borosilicate glass 3.3 and fitted with a PTFE plug for outstanding chemical resistance and smooth operation. This stopcock includes a retaining device for enhanced safety and is ideal for laboratory use in flow control, vacuum systems, and distillation setups.

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NZ $102.69

Inc. GST