290 
FOREST AND STREAM 
July, 1922 
SEK 
(from French 
SEC dry) 
Is the name of a line of products which 
waterproof and lengthen the life of 
articles treated. 
There is a separate SEK product 
especially designed for each purpose. 
Sport~SEK for Fishing Lines* 
Waterproofs, increases tensile 
strength, improves one’s cashing, A 
water-soaked line snarls, tangles and 
breaks — Sport-SEK makes lines last 
longer. Will not stiffen line, — nor 
make line sticky or greasy. Recom- 
mended by leading Anglers and Cast- 
ing Clubs. Dry flies treated with 
Sport-SEK float on water like live 
flies and fool the fish. Use Sport- 
SEK to set colors of silk rod windings 
and prevent fading. 
4 oz. can 50c. 
Aut~0~SEK for Auto-tops. 
Auto top material begins to break 
down as soon as put on car (Explana- 
tory pamphlet free). 
Aut-O-SEK absolutely guaranteed to 
double life of new material and water- 
proof broken-down canvas, mohair, 
pantasote, etc. Aut-O-SEK top, 
bending and creasing won’t break 
fabric and cause leaking — Aut-O- 
SEK is permanent, won’t check nor 
peel. Easily applied, — wiped on top 
with a rag. Gives rich black luster 
like new top — not cheap shiny finish 
like second hand car. Quart enough 
for 5-passenger car. 
Quart can — $2.00. 
Sport-SEK for Clothing* 
For canvas clothing, raincoats, um- 
brellas, etc. Waterproofs, prevents 
mildew. Most duck clothing sold 
as “waterproof” has merely been 
washed with a mineral soap, — a 
temporary treatment. Sport-SEK 
for Clothing is permanent, — easily 
applied, — clean, sanitary. 
Quart Can— $1.50. 
Shoe-SEK 
Softens and preserves leather, pre- 
vents cracking, and so thoroughly 
waterproofs both soles and upoers 
that overshoes are unnecessary. 
SEK intensifies and holds the shine, 
thus avoiding frequent shines. SEK 
is clean — not oily nor greasy — will not 
soil clothing. Keep your feet dry for 
a year with one application of non- 
injurious SEK. Positively guaranteed 
to materially lengthen the wearing 
life of shoes. 
4 oz. can 50c. 
Leth-O-SEK 
Softens, preserves, waterproofs all 
articles of leather without filming, 
weakening, discoloring or impairing 
the article. Black for harness and 
Clear for Sporting goods. Treat your 
traveling bags, belts etc., to prevent 
cracking and breaking. 
Pint cans — $1.25. 
Can-Va-SEK 
for tents, awnings, and canvas of all 
kinds. Waterproofs thoroughly — 
increases tensile strength — prevents 
mildew — positively doubles the life 
of cotton textiles. A thin, clear liquid 
easily applied with sprayer, sponge or 
sprinkling can. Does not discolor — 
can be used on fancy colored canvas — 
will not rub off or wash out — Can-Va- 
SEK is permanent. Allows free venti- 
lation through canvas— does not 
increase weight materially. Dries 
quickly. SEK treated canvas imparts 
no odor to food or clothing. Write 
for interesting pamphlet. 
Single Gallon $2.50 — liberal discounts 
on larger quantities— Gallon covers 
100 to 160 sq. ft. 
WHY 
WATERPROOF? 
SEK 
S EK is the result of experienced chemists 
working toward a definite end. 
This end was to produce a permanent 
waterproofing for textiles that would pre- 
serve and increase their wearing life and 
usefulness. 
After thorough investigation of the various 
uses to which textiles are suited the following 
conditions were laid down and met : — 
What a Waterproofing Treat- 
ment Must Be and Should Do 
It should Waterproof — shed water; Preserve — increase 
wearing life; be Permanent — last as long as the canvas. 
Must be Clean — not oily nor greasy. Odorless — impart 
no odor to food or clothing; Flexible — not stiffen canvas 
perceptibly; Light — not increase weight of canvas ap- 
preciably; Open — allow free circulation of air through 
cloth; that it should be Easy To Apply. 
SEK Waterproofs — 
SEK-treated canvas sheds water perfectly — few 
treatments do. 
SEK Preserves — 
SEK positively doubles the life of textiles — Most 
waterproofing compounds break down the fiber of 
cotton. 
SEK Is Permanent — 
Its efficiency is not impaired by use or age — No other 
treatment is permanent. 
SEK Is Clean— 
Leaves the canvas clean and sanitary and not oily 
or greasy. (Some treatments ruin clothing, food, and 
anything with which the canvas comes in contact.) 
SEK Is Light— 
Does not increase weight of canvas appreciably. — 
(Some treatments add greatly to weight of canvas.) 
SEK Is Easy to Apply — 
Just dampen cloth evenly and thoroughly and allow to 
dry. (Some treatments add considerably to time and 
labor costs due to difficulty of application.) 
SEK Is Open — 
Allows free ventilation through cloth. (Most treat- 
ments close the interstices between the threads and 
prevent circulation of air.) 
SEK-Treated 
Cloth imparts no odor to food or clothing. (Many 
treatments cannot be used on coverings for food 
products.) 
NO OTHER WATERPROOFING COMPOUND 
EITHER MANUFACTURED OR HOME-MADE 
CAN MEET THE ABOVE SPECIFICATIONS. 
The SEK product for canvas is sold under the trade 
name of Can-Va-SEK. 
What Users 
say about 
SEK 
“I found Sport-SEK far superior to 
deer fat and graphite which I have 
used for years, as it requires much less 
work to put SEK on and there is no 
danger of making the line sticky, as 
it will always do with deer fat unless 
a lot of work is put to rubbing it 
thoroughly ” 
“Treating an auto top with Aut-O- 
SEK is just like buying a new top for 
$ 2.00 ’> 
“We e^ect to use a large quantity of 
this high grade waterproofing this 
year. We have never been very 
strong for waterproofing until we got 
hold of CAN-VA-SEK. It seems to 
meet the objections of any other 
waterproofing, it is neither oily nor 
greasy, leaves the canvas pliable, 
permits ventilation, will absolutely 
turn the water if properly applied 
and in addition, will prolong the life 
of the canvas ” 
“We have had perfect satisfaction in 
using it on our own stock of tents and 
have never had one complaint from 
the amount we have sold the trade.” 
“I will conscientiously say that I never 
used a waterproofing that gave me 
such general satisfaction as yours. 
For I am in a position to know. In 
the first place I sleep and eat every- 
body under canvas with the show. I 
used your waterproofing on the big 
top, marquette, office tent, all sleeping 
tents, dining room and kitchen tents. 
Of course me being interested in the 
welfare of my people I have asked 
them time and again if their tents 
were leaking. They all answered 
NO. As I have been under canvas 
for 30 odd years I will not hesitate to 
recommend Can-Va-SEK to anyone 
in need of waterproofing. ...” 
“My awning was treated two years 
ago with Can-Va-SEK and today it is 
in very good condition; in fact it looks 
asgoodasthedayit was bought. . . ” 
“I have been using SEK on my shoes 
for three years, and it has proved very 
satisfactory. I never have wet feet, 
the leather is soft and very pliable 
and the shine is perfect. I would 
not be satisfied without it. ... ” 
“Military police and patrolmen using 
their automatic pistols shot several 
hundred holes in the top of the Hip- 
podrome tent at the State Fair and 
thus relieved the canvas of the tre- 
mendous weight of water in numerous 
large pools preventing its collapse 
on a crowd of 5,000 people witnessing 
the show early last night. ...” 
Arkansas Gazette, Little Rock, Nov. 
18, 1921. 
SEK SI" 
2756 W. Madison St. 
Chicago 
DEALERS — send order to your jobber or to us 
direct. 
SPORTSMEN — If dealer cannot furnish, order 
from us. We will ship prepaid. 
'How DRY I am”— SEK 
