Call Today! 1.800.265.9616

Brawn Seal

Movement

kc seals reciprocating
Reciprocating

kc seals static
Static

Duty

pressure high


High Pressure

Action

kc seals single

kc seals double

Single/Double

Description

K.C. Seals Brawn® Seal is a compact double acting rod or piston seal with almost no dead spots. The Brawn® Seal has excellent stability within the groove, meaning it eliminates the risk of seal roll and spiral failure. The Brawn® seal is commonly used as a T-Seal and O-Ring and back-up configuration replacement because of its high pressure rating.

Features
  • One piece high pressure seal
  • Zero pressure trap
  • Fits into standard O-ring grooves
  • Easy installation
  • Ability to fit into existing grooves
  • Stress reduction
  • Non-twisting in dynamic applications
Applications
  • High pressure applications
  • MWD tools
  • Molding machines
  • Aerospace equipment
  • Industrial hydraulics
  • Mobile equipment
  • O-ring replacement
  • T-seal replacement
Technical Data

Material:

Nitrile/FKM/HNBR/Aflas

Temperature:

Nitrile

-40°C to +120°C
-40°F to +250°F

FKM

-26°C to +204°C
-15°F to +400°F

HNBR

-40°C to +150°C
-40°F to +320°F

Aflas®

-09 ºC to +232 ºC
-16 ºF to +450 ºF

Speed:

3 ft/s

Pressure:

10,000 psi

Media:

Chemical compatibility chart

brawn seal fig1

brawn seal fig2

 

Technical Analysis

High pressure simulation: The FEA analysis shows complete failure of the HNBR O-Ring at 10,000 PSI with the HNBR Brawn seal showing slight failure at the non-sealing surface. Both simulations were done at ambient temperature. brawn seal fig1

Seal Geometry Simulation

To show the importance of the radius that is machined at the non-sealing surface, K.C. Seals has simulated what happens to the sealing surface under compression with a radius (Figure 2.1) and what happens to the sealing surface without a radius (Figure 2.2). As depicted Figure 2.1 shows no pressure trap and a more uniformed sealing surface in comparison with Figure 2.2 where the forces are concentrated in one small area, which happens to be the sealing face, increasing wear and the possibility of failure. To put the radius feature into context; when the force (pressure) is being applied to the sealing surface, the radius changes the direction of the counter force from the sealing surface to the non-sealing surface.

brawn seal fig2

Figure 2.1. Brawn seal under compression with a radius at the non-sealing surface

brawn seal fig3

Figure 2.2. Brawn seal under compression without a radius at the non-sealing surface

Hardware Design Guidelines & Part Numbers

Radial clearances: inch"

Rod Diameter RangeMaximum Clearance
0.123" to 0.375" 0.004"
0.376" to 1.500" 0.005"
1.501" to 4.500" 0.007"
4.501" to 8.500" 0.009"
Over 8.500" 0.010"

Note: Max Diametrical Gap can vary depending on what material is chosen, as well as the temperature and media of the application. Please contact our sales department for more info This email address is being protected from spambots. You need JavaScript enabled to view it.

Surface finish: µinch

Roughness DepthMating SurfaceGroove Surface
Rmax 40-160 <625
RzDin 25-100 <400
Ra 4-16 <63
Style Part #Groove Width DRod Diameter BHousing Diameter ACAD File
BRW 0.150 0.186 0.370 cad icon
BRW 0.150 0.248 0.433 cad icon
BRW 0.150 0.310 0.495 cad icon
BRW 0.185 0.373 0.618 cad icon
BRW 0.185 0.435 0.680 cad icon
BRW 0.185 0.498 0.743 cad icon
BRW 0.185 0.560 0.805 cad icon
BRW 0.185 0.623 0.868 cad icon
BRW 0.185 0.685 0.930 cad icon
BRW 0.185 0.747 0.992 cad icon
BRW 0.185 0.809 1.054 cad icon
BRW 0.185 0.872 1.117 cad icon
BRW 0.185 0.934 1.179 cad icon
BRW 0.185 0.997 1.242 cad icon
BRW 0.185 1.059 1.304 cad icon
BRW 0.185 1.122 1.367 cad icon
BRW 0.185 1.184 1.429 cad icon
BRW 0.185 1.247 1.492 cad icon
BRW 0.185 1.309 1.554 cad icon
BRW 0.185 1.372 1.617 cad icon
BRW 0.185 1.434 1.679 cad icon
BRW 0.185 1.497 1.742 cad icon
BRW 0.280 1.497 1.871 cad icon
BRW 0.280 1.622 1.996 cad icon
BRW 0.280 1.747 2.121 cad icon
BRW 0.280 1.872 2.246 cad icon
BRW 0.280 1.977 2.371 cad icon
BRW 0.280 2.122 2.496 cad icon
BRW 0.280 2.247 2.613 cad icon
BRW 0.280 2.372 2.746 cad icon
BRW 0.280 2.497 2.871 cad icon
BRW 0.280 2.622 2.996 cad icon
BRW 0.280 2.747 3.121 cad icon
BRW 0.280 2.872 3.246 cad icon
BRW 0.280 2.996 3.370 cad icon
BRW 0.280 3.121 3.495 cad icon
BRW 0.280 3.246 3.620 cad icon
BRW 0.280 3.371 3.745 cad icon
BRW 0.280 3.496 3.870 cad icon
BRW 0.280 3.621 3.995 cad icon
BRW 0.280 3.746 4.120 cad icon
BRW 0.280 3.871 4.245 cad icon
BRW 0.280 3.996 4.370 cad icon
BRW 0.280 4.121 4.495 cad icon
BRW 0.280 4.246 4.620 cad icon
BRW 0.280 4.371 4.745 cad icon
BRW 0.280 4.496 4.870 cad icon
BRW 0.366 4.996 5.475 cad icon
BRW 0.366 5.246 5.725 cad icon
BRW 0.366 5.496 5.975 cad icon
BRW 0.366 5.621 6.100 cad icon
BRW 0.366 5.871 6.350 cad icon
BRW 0.366 5.996 6.475 cad icon
BRW 0.366 6.246 6.725 cad icon
BRW 0.366 6.496 6.975 cad icon
BRW 0.366 6.746 7.225 cad icon
BRW 0.366 6.996 7.475 cad icon
BRW 0.366 7.246 7.725 cad icon
BRW 0.366 7.500 7.984 cad icon
BRW 0.366 7.746 8.225 cad icon
BRW 0.366 7.996 8.475 cad icon
BRW 0.366 8.500 8.984 cad icon
BRW 0.366 8.996 9.475 cad icon
BRW 0.366 9.496 9.975 cad icon
BRW 0.366 9.996 10.475 cad icon
BRW 0.366 10.496 10.975 cad icon
BRW 0.366 10.996 11.475 cad icon
BRW 0.366 11.496 11.975 cad icon
Style Part #Groove Width DRod Diameter BHousing Diameter ACAD File