China Standard Stopper hollow Standard ground mouth Manufacture and Factory

Standard Stopper hollow Standard ground mouth

Short Description:

Product Name: Standard Stopper

Characteristic:Standard Ground Mouth

Material: Boro 3.3 glass

Color: Clear

OEM is available

Payment Term: T/T,L/C,Western Union,Palpay

Samples: Offered within 5 days generally

Loading Port: Qingdao /Shanghai port or up to customer

Delivery Time:15-30 days up to customer’s quantity

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Product Detail

Product Tags

Laboratory Glassware

Standard Stopper

Standard Stopper Introduction

Standard stopper is mainly used for the sealing of salt glass instruments and standard mouth instruments, there are certain requirements on the appearance and practicability, especially the ground surface should be fine, the taper should be accurate, so that it has a higher vacuum effect, the hollow plug is suitable for single mouth, three, all kinds of flasks, and the grinding mouth for bottle stopper; To take into account the heat problem, if it is solid, will be unevenly heated and easy to cause rupture, because a lot of time the hollow plug will come into contact with hot material.

Product Specification

The dimensions are all measured by hand, so there may be some errors. Please contact us for the specific freight.

5065	Standard Stopper hollow Standard ground mouth
Ground mouth	Length(mm)
10/19	42
14/23	50
19/26	63
24/29	70
29/32	73
34/35	82
40/38	85
50/42	90

Product Parameters

BOROSILICATE GLASS
BORO3.3
SiO2 Content	>80%
Strain Point	520°C
Annealing Point	560°C
Softening Point	820°C
Refractive Index	1.47
Light Transmission(2mm)	0.92
Elastic Modulus	67KNmm-2
Tensile Strength	40-120Nmm-2
Glass stress Optical Coefficient	3.8*10-6mm2/N
Processing Temperature(104dpas)	1220°C
Linear Coefficient of Expansion(20-300°C)	3.3*10-6K-1
Density(20°C)	2.23gcm-1
Specific Heat	0.9jg-1K-1
Thermal Conductivity	1.2Wm-1K-1
Hydrolytic Resistance(ISO 719)	Grade 1
Acid Resistance(ISO 185)	Grade 1
Alkali Resistance(ISO 695)	Grade 2
Thermal Shock Resistance Rod6*30mm	300°C

About Standard Stopper

Product Details

Borosilicate glass has excellent chemical and physical properties.The linear expansion cofficient of the primary hydrolyzable glass is 3.3 for applications requiring excellent chemical resistance and thermal resistance (including thermal shock resistance), as well as high mechanical stability. It is a typical glass for chemical equipment.

Frosted bottle mouth

Fine matte, thick and strong, each hollow plug is marked with size specifications.Hollow design, light weight overall.

About Standard Stopper

Standard Stoppers are mainly used for the plugging of experimental instruments and the sealing of standard mouth instruments. They have certain requirements on appearance and practicality, especially the matte surface must be thin and the taper must be accurate to make it have a high vacuum effect.