Pressure Plates - Uniform Design and Force Dispersion

Several Link-Seal® Modular Seal Models are now available with new "force dispersion" pressure plates that are designed to more evenly spread the tensional forces created when torquing the central bolt against both pressure plate and rubber seal. In addition, the new design has an average of 15% more strength than previous Link-Seal® Modular Seal versions.




Independent Laboratory Test
The Newly Engineered Force Dispersion Pressure Plates have been fully tested by an independent laboratory to ensure design theory translates into the capability to handle the rigors of real world applications.

Metric Hardware Now Standardized

To provide consistency and worldwide compatibility, PSI now offers all Link-Seal® Modular Seal sizes with metric bolts. The new bolts adhere to metric specifications as used by most all countries outside the U.S.A. Smaller Link-Seal® Modular Seals (sizes LS-200, LS-275, LS-300, and LS-315) will consist of metric Allen head or socket cap bolt heads while the balance of the line will use standard hex head metric bolts.

Link-Seal® Modular Seal Metric Bolts

Link-Seal® Model

Tool Size Req.

Bolt Head Type

LS-200, LS-275

4mm Allen

LS-300, LS-315

6mm Allen

LS-325, LS-340, LS-360

13mm Hex

LS-400, LS-410, LS-425, LS-475

17mm Hex

LS-500, LS-525, LS-575

19mm Hex

LS-600

30mm Hex

LS-650

19mm Hex

Dimensional Data

For LS-200 through LS-315



For LS-325 through LS-650


*Dimensional Data for Models C, L, O, S-316, LS-316 and OS-316

LINK-SEAL
MODEL NO.

RUBBER SEALING ELEMENT

PRESSURE PLATE

BOLT

WEIGHT
FOR
10 LINK
SECTION
(LBS)

MIN.
REQUIRED
SEATING
WIDTH

ACTUAL
THICKNESS
(B)

FREE
LENGTH
(C)

AVG. LENGTH
AFTER
TIGHTENING
(D)

LENGTH
(A)

HEIGHT
(T)

ALLEN HEAD
HEX ACROSS FLATS

(H)

THREAD
SIZE

(L)

LS-200-*

0.48”

1.75”

1.38”

1.06”

0.31”

4mm Allen (0.157”)

4.95mm (0.195”)

M5-0.8

70mm (2.755”)

0.70

2.25”

LS-275-*

0.61”

1.75”

1.38”

0.97”

0.31”

4mm Allen (0.157”)

4.95mm (0.195”)

M5-0.8

70mm (2.755”)

0.75

2.25”

LS-300-*

0.69”

2.37”

1.87”

1.56”

0.44”

6mm Allen (0.236”)

7.87mm (0.310”)

M8-1.25

90mm (3.543”)

2.15

3.00”

LS-315-*

0.81”

2.37”

1.87”

1.44”

0.44”

6mm Allen (0.236”)

7.87mm (0.310”)

M8-1.25

90mm (3.543”)

2.30

3.00”

LS-325-*

0.88”

2.63”

2.00”

3.13”

1.00”

13mm (0.511”)

5.30mm (0.215”)

M8-1.25

90mm (3.543”)

5.50

4.00”

LS-340-*

1.00”

2.70”

2.25”

1.48”

0.66”

13mm (0.511”)

5.30mm (0.215”)

M8-1.25

120mm (4.720”)

3.30

4.00”

LS-360-*

1.24”

2.70”

2.25”

2.05”

0.77”

13mm (0.511”)

5.30mm (0.215”)

M8-1.25

120mm (4.720”)

5.10

4.00”

LS-400-*

1.38”

3.50”

2.75”

3.50”

1.06”

17mm (0.669”)

6.40mm (0.250”)

M10-1.5

130mm (5.118”)

12.00

5.00”

LS-410-*

1.43”

3.37”

2.87”

2.52”

0.88”

17mm (0.669”)

6.40mm (0.250”)

M10-1.5

130mm (5.118”)

8.20

5.00”

LS-425-*

1.06”

3.00”

2.25”

3.50”

1.19”

17mm (0.669”)

6.40mm (0.250”)

M10-1.5

130mm (5.118”)

10.00

5.00”

LS-475-*

1.56”

3.38”

2.63”

2.63”

0.88”

17mm (0.669”)

6.40mm (0.250”)

M10-1.5

130mm (5.118”)

10.00

5.00”

LS-500-*

2.25”

3.75”

2.75”

3.63”

1.06”

19mm (0.748”)

7.50mm (0.300”)

M12-1.75

140mm (5.511”)

22.50

5.00”

LS-525-*

2.06”

3.75”

2.87”

3.63”

1.06”

19mm (0.748”)

7.50mm (0.300”)

M12-1.75

140mm (5.511”)

21.00

5.00”

LS-575-*

1.81”

3.75”

3.00”

3.00”

1.00”

19mm (0.748”)

7.50mm (0.300”)

M12-1.75

140mm (5.511”)

15.50

5.00”

LS-600-*

3.09”

4.00”

3.00”

6.00”

1.90”

30mm (0.748”)

12.50mm (0.490”)

M20-2.5

180mm (7.086”)

60.60

6.00”

LS-650-*

2.71”

3.98”

3.00”

3.96”

1.19”

19mm (0.748”)

7.50mm (0.300”)

M12-1.75

140mm (5.511”)

26.10

6.00”