Eccentric Screw Pumps
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Genuine Sealmatic Certified Component
Sealmatic Mechanical SealsSeries: VTX Cavity & Screw Pumps
VTX Single Seals
CTX cartridge mechanical seal platform with specifically modified gland cover for eccentric screw and progressive cavity pumps. Tailored for sanitary food, chemical viscosities, wineries, and sludge duties.
SizesUp to 100 mm (4.0")
Max Pressure25 bar (363 PSI)
Temperature-40°C to +220°C
Max Speed16 m/s (52 ft/s)
Product Description
Single seal configuration
Balanced design
Independent of direction of rotation
Cartridge construction
Technical Features
1
Ideal for use in process pump standardization
2
O-ring is dynamically loaded to prevent shaft damage
3
Dimensional modification of the stuffing box chamber is not required due to short radial installation height
4
Ideal to convert and retrofit pumps with packings and large volume OEM production
5
Cartridge unit factory assembled for easy installation, which reduces downtime
6
Rugged design for long operating life
Details
Component Index & Parts Breakdown| Item No. | Description |
|---|---|
| 1 | Seal face |
| 2, 5, 7 | O-Ring |
| 3 | Spring |
| 4 | Seat |
| 6 | Shaft sleeve |
| 8 | Drive collar |
| 9 | Set screw |
| 10 | Snap ring |
| 11 | Cover |
| 12 | Assembly fixture |
| 13 | HSH Cap Screw |
VTX Design Specification
CTX seals with modified cover for eccentric screw pumps.
Example Compatible Pump Lines:
Seepex BNNetzsch NM...S, NM...B, NE (P)Allweiler AE, AEB, AEDRobbins & Myers / Moyno 2000 CCMono E-Range
Performance Capabilities
VTX-SN, -SNO, -QN, -TNShaft SizesUpto 100 mm (4.000")*Other sizes on request
Temperature Ranget = –40 °C ... +220 °C(–40 °F ... +428 °F)
Material Combination BQ1:High Speed
Pressurep1 = 25 bar (363 PSI)
Speed16 m/s (52 ft/s)
Material Combination Q1Q1 or U2Q1:Standard
Pressurep1 = 12 bar (175 PSI)
Speed10 m/s (33 ft/s)
Permissible axial movement:± 1.0 mm (d1 ≥ 75 mm ± 1.5 mm)
Note: Verify O-ring resistance against aggressive chemical washdowns or CIP/SIP media.
Materials
Seal face:Silicon carbide (Q1), Carbon graphite resin impregnated (B), Tungsten carbide (U2)
Seat:Silicon carbide (Q1)
Secondary seals:FKM (V), EPDM (E), FFKM (K), Perflourocarbon rubber/PTFE (U1)
Springs:Hastelloy® C-4 (M)
Metal parts:CrNiMo steel (G), CrNiMo cast steel (G)
High integrity metallurgy: Hastelloy® C-4 springs, CrNiMo cast steel hardware, and silicon carbide/tungsten carbide faces.
Typical Industrial Applications
Recommended equipment & industry sectorsFoodstuffs and animal feed industries
Sweet cider pressing and beverage production
Viticulture and wineries
Spirit production and alcohol industry
Breweries and malt houses
Sugar industry
Pharmaceuticals and cosmetics industry
Oil and gas industry
Pulp and paper production
Paint and lacquer industry
Chemicals industry
Automobile industry
Water and waste water industry