HexaTech Double Robin (Double Ended)

The Precision Dual Mechanical Seal is engineered for high-performance sealing in demanding industrial pumping and rotating equipment applications. Designed with a back-to-back/tandem configuration, it provides dual-barrier containment to prevent leakage of hazardous, toxic, abrasive, or high-pressure fluids.

Key Specifications & Features

Dual-Face Protection
Delivers redundant sealing security for critical process fluids, extending equipment reliability and minimizing downtime.
Balanced Spring Mechanism
Utilizes a central coil spring arrangement to maintain uniform face contact pressure across operational cycles.
Elastomer & Secondary Sealing
High-integrity O-rings and static rings provide superior resilience against thermal expansion and chemical degradation.
Robust Construction
Features wear-resistant mating face combinations (Silicon Carbide / Carbon / Tungsten Carbide) with premium stainless steel hardware.

SIZE	d	d3	d7	L	L3	L4
10	10	20	21.0	30	19	5.5
12	12	22	23/26	30/32	19/21	5.5
14	14	25	26/28	35/38	24/27	5.5
15	15	27	28/30	38	27	5.5
16	16	27	28/30	38	27	5.5
17	17	32	33/35	38/48	26/32	6/8
18	18	32	33/35	38/48	26/32	6/8
20	20	34	35/36	40/48	28/32	6/8
22	22	36	37/38	45	33/29	6/8
25	25	39	40/41	48	34/32	7/8
28	28	42	43	51	35	8
30	30	44	45	51	35	8
35	35	49	50	51	35	8
40	40	56	58	58/61	39/42	9.5
45	45	61	63	58/61	39/42	9.5

Specification:

No.	DESCRIPTION	MATERIAL
1	Cup Gasket	NBR / HNBR / VITON
2	Stationary ring	Alumina ceramic / SIC
3	Rotary ring	Graphite carbon / SIC
4	Bellows	NBR / HNBR / VITON
5	Retainer	SUS304
6	Drive ring	SUS304
7	Spring	SUS304

Application:

PARAMETER	SPECIFICATION
Pressure	1.2MPa
Speed	10M/S
Temperature	-30°C ~ 200°C

HEXATECH TRADING CO.

Hexatech Trading Co. designs and manufactures high-performance mechanical seals and related products for diverse heavy and process industries worldwide.